IMT-Wiki - User contributions [en]

https://www.imt.kit.edu/wiki/api.php?action=feedcontributions&feedformat=atom&user=Ian.Howard IMT-Wiki - User contributions [en] 2026-05-12T17:16:50Z User contributions MediaWiki 1.39.17 https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6997 AMOS-026a 2019-04-11T15:20:56Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard | Ian Howard]].<br /> <br /> This is a laser lab containing lasers of and below class 3B. Laser safety training is necessary for work in the lab.<br /> <br /> Two primary setups are located on the optical table. <br /> <br /> *A photoluminescence lifetime quantum yield measurement setup. This uses a laser diode driven in CW mode, or an LED source.<br /> *A lifetime measurement setup (for microsecond to millisecond lifetimes) based on multichannel scaling. This uses laser or LED sources driven in the quasi-CW mode of the Thorlabs driver. The pulses are longer than 1 µs and therefore fall into the category 'I' for laser safety considerations.<br /> <br /> In the remaining space on the table, there are two enclosures for the development of temporary user-needed setups.<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6996 AMOS-026a 2019-04-11T15:12:12Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard | Ian Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6995 AMOS-026a 2019-04-11T15:11:41Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard, Ian Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6994 AMOS-026a 2019-04-11T15:11:27Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard] Ian Howard]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6993 AMOS-026a 2019-04-11T15:11:16Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard Ian Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6992 AMOS-026a 2019-04-11T15:11:00Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6991 AMOS-026a 2019-04-11T15:10:43Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [User:Ian.Howard Ian Howard]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6990 AMOS-026a 2019-04-11T15:10:30Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[User:Ian.Howard Ian Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6989 AMOS-026a 2019-04-11T15:09:55Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [[user:Ian.Howard Ian Howard]]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6988 AMOS-026a 2019-04-11T15:09:45Z

<p>Ian.Howard: </p> <hr /> <div>For access to 026a please contact [user:Ian.Howard Ian Howard]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-026a&diff=6987 AMOS-026a 2019-04-11T15:09:25Z

<p>Ian.Howard: Created page with "For access to 026a please contact [user:ian.howard] Category:AMOS"</p> <hr /> <div>For access to 026a please contact [user:ian.howard]<br /> <br /> <br /> <br /> <br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=Category:AMOS&diff=6986 Category:AMOS 2019-04-11T15:04:34Z

<p>Ian.Howard: </p> <hr /> <div>[[file:AMOS_logo_white.png|300px|thumb|right|AMOS Logo]]<br /> <br /> AMOS (Advanced Materials and Optical Spectroscopy) is a sub-group of [[F&E4]] led by [[User:Ian.Howard|Dr. Ian Howard]].<br /> <br /> The AMOS research group, established in 2014, focuses on creating and characterizing optoelectronic materials designed for energy conversion and photonic applications. Optical spectroscopy lies at the heart of our research, with laser labs based around Ti:Sapphire amplifier and oscillator systems allowing us to interrogate our materials with a wide range of experimental techniques. We have a special focus on time-resolved absorption and emission spectroscopies that track dynamic processes from hundreds of femtoseconds to seconds and allow us to understand and improve material function.<br /> <br /> == Information == <br /> <br /> The primary labs of AMOS are 026a and 054 in the basement. A list of equipment in these labs is maintained in the folder J:\FuE4-N4E\Manuals\Optics Labs - 054__026a-Archive<br /> <br /> Please refer to this folder for detailed information on existing equipment, and maintain and update the folder with information relevant to new setups.<br /> <br /> User setups are described below.<br /> <br /> <br /> <br /> == See also ==<br /> * [http://www.imt.kit.edu/howard.php AMOS group on the IMT website]<br /> <br /> [[Category:F&E4]]<br /> <br /> {{suchbegriffe|Transient Absorption, Streak camera, PLQY, Fluorescence, Phosphorescence, Luminescence, SURMOF, Upconversion, Perovskites}}</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=Category:AMOS&diff=6985 Category:AMOS 2019-04-11T15:03:57Z

<p>Ian.Howard: </p> <hr /> <div>[[file:AMOS_logo_white.png|300px|thumb|right|AMOS Logo]]<br /> <br /> AMOS (Advanced Materials and Optical Spectroscopy) is a sub-group of [[F&E4]] led by [[User:Ian.Howard|Dr. Ian Howard]].<br /> <br /> The AMOS research group, established in 2014, focuses on creating and characterizing optoelectronic materials designed for energy conversion and photonic applications. Optical spectroscopy lies at the heart of our research, with laser labs based around Ti:Sapphire amplifier and oscillator systems allowing us to interrogate our materials with a wide range of experimental techniques. We have a special focus on time-resolved absorption and emission spectroscopies that track dynamic processes from hundreds of femtoseconds to seconds and allow us to understand and improve material function.<br /> <br /> == Information == <br /> <br /> The primary labs of AMOS are 026a and 054 in the basement. A list of equipment in these labs is maintained in the folder [J:\FuE4-N4E\Manuals\Optics Labs - 054__026a-Archive J:\FuE4-N4E\Manuals\Optics Labs - 054__026a-Archive]<br /> <br /> Please refer to this folder for detailed information on existing equipment, and maintain and update the folder with information relevant to new setups.<br /> <br /> User setups are described below.<br /> <br /> <br /> <br /> == See also ==<br /> * [http://www.imt.kit.edu/howard.php AMOS group on the IMT website]<br /> <br /> [[Category:F&E4]]<br /> <br /> {{suchbegriffe|Transient Absorption, Streak camera, PLQY, Fluorescence, Phosphorescence, Luminescence, SURMOF, Upconversion, Perovskites}}</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=6984 User:Ian.Howard 2019-04-11T15:02:53Z

<p>Ian.Howard: </p> <hr /> <div>[[file:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Division''': FuE4<br /> <br /> '''Group''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> <br /> == Tätigkeitsbeschreibung ==<br /> Group leader of AMOS<br /> <br /> <br /> <br /> <br /> == Links ==<br /> [https://scholar.google.de/citations?user=Me4AkJAAAAAJ&hl=en google scholar profile]<br /> <br /> <br /> [[Category:Mitarbeiter - Employees]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=6983 User:Ian.Howard 2019-04-11T15:02:15Z

<p>Ian.Howard: </p> <hr /> <div>[[file:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Division''': FuE4<br /> <br /> '''Group''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> <br /> == Tätigkeitsbeschreibung ==<br /> Group leader of AMOS<br /> <br /> <br /> <br /> <br /> == Links ==<br /> [https://scholar.google.de/citations?user=Me4AkJAAAAAJ&hl=en google scholar profile]<br /> [[category:AMOS AMOS]]<br /> <br /> [[Category:Mitarbeiter - Employees]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=6982 User:Ian.Howard 2019-04-11T15:01:54Z

<p>Ian.Howard: </p> <hr /> <div>[[file:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Division''': FuE4<br /> <br /> '''Group''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> <br /> == Tätigkeitsbeschreibung ==<br /> Group leader of AMOS<br /> <br /> <br /> <br /> <br /> == Links ==<br /> [https://scholar.google.de/citations?user=Me4AkJAAAAAJ&hl=en google scholar profile]<br /> [[category:AMOS]]<br /> <br /> [[Category:Mitarbeiter - Employees]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-Streak_Camera&diff=6981 AMOS-Streak Camera 2019-04-11T14:59:49Z

<p>Ian.Howard: </p> <hr /> <div><br /> <br /> <br /> <div style="padding:20px;background:#FDA;">The purpose of these instructions is to give you a quick overview on how to work with the devices. You should still be familiar with the manual and receive a proper introduction from the lab leader or the principal users.</div><br /> <br /> [[file:Lab 054.jpg|500px|thumb|right|LASER Lab]]<br /> <br /> '''Device location''': Optiklabor F&E4-3GP <br /> <br /> '''Lab location:''' [http://www.kit.edu/campusplan/?id=310 Building 310 Basement Room no. 054]<br /> <br /> '''Phone number:''' 24669<br /> <br /> '''Lab leader:''' [[user:Ian.Howard | Ian Howard]]<br /> <br /> '''Principal users:''' [[user:Marius.Jakoby | Marius.Jakoby]], <br /> <br /> '''Access:''' The setup is in a class IV laser lab. Only trained users with key may use the setup. The Lab is located in the basement of building 310. Open the door of the basement of B310, go straight ahead and open another door. The new LASER Lab can be found on your left side.<br /> <br /> == Short Description ==<br /> [[file:Synchroscan Unit.jpg|200px|thumb|left|Streak camera with Synchroscan Unit]]<br /> <br /> [[file:Slow Single Sweep.jpg|200px|thumb|right|Streak camera with Slow Single Sweep Unit]]<br /> <br /> The streak camera is a device to measure ultra-fast light phenomena and delivers intensity vs. time vs. <br /> wavelength information. It can be used in two configurations:<br /> <br /> '''Synchroscan (< 5 ns)'''<br /> <br /> In this configuration, the streak camera is synchronized with the LASER pulses. i.e., the capacitor in the streak camera charges and discharges in the LASER frequency. This is particularly useful for fast decays. For using this configuration the streak camera set-up has to be loaded with the synchroscan unit M10911. An additional delay unit can be used with the synchroscan to account for the delay between the generation and reception of a LASER pulse and for accurately finding the zero point in time from which decay starts.<br /> <br /> '''Slow Single Sweep'''( upto 1 ms )<br /> <br /> In this configuration, the streak camera is synchronized with the output of a pulse picker which will either divide the LASER pulse frequency by a factor or work in gated mode using the signal generated by an external function generator. For using this configuration, the streak camera set-up has to be loaded with the slow single sweep unit M10913.(See image on right). This is particularly useful for long lived species(> 100 microseconds) with weak intensity of emission. The streak camera then gives the signal accumulated over time.<br /> <br /> [[File:Streak_spectral_response.jpg|300px|thumb|right|Spectral response of the streak tube. Our unit is the IR-enhanced S-1.]]<br /> <br /> The official designation of our streak camera is '''Hamamatsu Universal streak camera C10910-02'''.<br /> <br /> == Start-up Procedure==<br /> <br /> ===Mounting the Sample===<br /> [[file:Sampleholder streakcamera.jpg|200px|thumb|right|Sample Holder]]<br /> <br /> # Choose the required type of sample holder<br /> # Fix the sample holder in the marked position on the optical table<br /> # Carefully place the sample in the sample holder.<br /> # Make sure that the sample is facing the right direction so that it will be incident by the LASER beam and the emission from the sample will reach the entrance slit of the streak camera.<br /> # Horizontal and vertical adjustments can be made using the stage on which the chamber is mounted.<br /> # If vacuum is required, close the holder with the aid of rubber bushes and clamps such that it is air tight and turn ON the vacuum pump by following the procedure below.<br /> <br /> <br /> ===Turning ON the vacuum pump===<br /> <br /> # Connect the inlet tube of the vacuum pump to the sample holder<br /> # Make sure that all joints are tightly closed.<br /> # Ensure that the ventilation valve is closed. It can be found on the backside of the pump. See image.<br /> # Press the green switch and wait for the pump to finish initialization, then press the power button<br /> # The display can be changed to different pages by pressing the right/left arrow keys on the pump<br /> # Pressure is displayed on Page 340 and the Speed in displayed in terms of rotational frequency in page 309<br /> # Wait till sufficient vacuum is generated, normally 10^-5 hPa pressure<br /> # If sufficient vacuum is not building up, try moving the ballast valve downwards to remove any residues. It can be seen from the right side of the pump. See image.<br /> # If the sample has to be taken out of the chamber, for inspecting or for changing the direction, then first the vacuum has to broken.<br /> # For this press the power button. Wait till the speed is below 100Hz. Then open the ventilation valve for faster shut down of the vacuum.<br /> # Now, the chamber can be opened and the sample can be taken out for making the necessary changes.<br /> # Repeat the procedure for starting the vacuum after tightly securing all joints.<br /> <br /> <br /> <gallery caption="Vacuum Pump Gallery" widths="250px"><br /> file:Vacuum pump.jpg|Vacuum Pump Pfeiffer HiCube 80 Eco for generating vacuum upto 10^-5 hPa<br /> file:BallastValve vacuumPump.jpg|Ballast valve for cleaning out the residues in the Vacuum pump<br /> file:VentilationValve VacuumPump.jpg|Ventilation Valve for the Vacuum Pump<br /> </gallery><br /> <br /> === Turning the LASER ON ===<br /> <br /> # Turn ON the touch screen display for controlling the output of the CHAMELEON COMPACT OPO-VIS System with Idler(if it is not already ON). A mouse is also provided for convenience. Open the software for the OPO Compact system. <br /> # It has options for different types of output. The direct LASER output, its SHG, the OPO output and its SHG<br /> # Ensure that the shutter is closed and the cooling units for the LASER are switched ON.<br /> # Make sure that the LASER will not go beyond or create unnecessary reflections outside the operating plane of the optical table.<br /> # Roughly plan the path to be followed on the optical table and place mirrors, lenses and irises accordingly.<br /> # Set the required wavelength for the Ti:Sa LASER.<br /> # Turn the LASER key to ON position, and wait till the LASER ramps up enough power. Ideally at 800nm the power should be 4.3W. <br /> # To start LASER emission, press the shutter button. (A yellow LED beneath the button indicates that the shutter is open)<br /> # For alignment purposes, use reduced power, so pump the OPO by clicking on the controller. Generally for the streak camera reduced power after pumping the OPO will be sufficient. If the emission is too weak, one can stop pumping the OPO by clicking again on the controller.<br /> # If a wavelength other than the set wavelength or its second harmonic is required, you can use the OPO for selecting the required wavelength. This can be done by clicking on the plot in the touch screen display and then entering the required wavelength on the pop-up window. Then wait for the OPO to tune to that frequency.<br /> # Make sure to wear proper eye protection.<br /> # To get the LASER output, click on the type of output required. <br /> # To start the emission click Ti:Sa out or if the OPO is used to obtain a different wavelength, click opo out.<br /> # Check the emitted light with the help of an appropriate detector card<br /> <br /> <br /> <gallery caption="LASER gallery" widths="250px"><br /> file:TiSa OPO Assembly.jpg|Ti:Sa LASER and OPO-VUS system with Idler<br /> file:Tablet for LASER-OPO Assembly.jpg|Touch screen control for LASER system<br /> file:LASER control.jpg|Main Control Panel for the LASER<br /> file:Front view of Chameleon Compact OPO-VIS.jpg|Front View of Chameleon compact OPO-VIS system with Idler<br /> </gallery><br /> <br /> <br /> ==== Delivering beam to the sample-synchroscan mode====<br /> # The LASER beam is to be directly taken to the sample from the output of the OPO-VIS in synchroscan mode<br /> # Check how it is set currently. If the LASER beam is set in a way that it passes through the pulse picker, it has to be changed for synchroscan mode. Follow the steps below.<br /> # Put a mirror at the output of the OPO-VIS, in front of the selected output, so that the beam will be rotated by 90 degrees.<br /> # Rotate the beam by 90 degrees again, so that it falls on another mirror which will rotate it again by 90 degrees and make it pass through the pair of irises fixed on the table.<br /> # There will be mirrors already fixed to the table to increase the height of the beam and another mirror which will reflect the beam onto the sample.<br /> # For proper alignment, make sure that the beam passes through the irises.<br /> # Fine tuning can be done using two pairs of irises and mirrors. <br /> ## Select the pairs such that an iris and a mirror farther from it, but earlier in the beam path form the pair.<br /> ## Focus on one pair at a time. <br /> ## Slightly adjust the mirror vertically or horizontally to make the beam pass through the centre of the iris.<br /> ## Make sure it passes through the centre by closing the iris.<br /> ## Repeat the same procedure for the other pair<br /> ## Continue the same procedure on the pairs alternatively, till the beam passes through the centre of both irises.<br /> # Adjust the last mirror before the beam hits the sample and the sample stage, so that the beam hits the sample.<br /> <br /> ==== Delivering beam to sample through pulse picker ====<br /> [[File:Delay Generator.jpg|150px|thumb|right|Delay Generator]]<br /> [[File:FnGen Pulsepicker contoller.jpg|150px|thumb|right|Function generator for external triggering in gated mode (long delay) and the Pulse Picker Control system ]]<br /> [[File:Pulsepickercontroller shortdelaymode.jpg|150px|thumb|right|Pulse picker controller in short delay mode]]<br /> # Check how the beam path is set. <br /> # If it is not set in the way that the required output passes through the pulse picker, the current setup has to be changed.<br /> # Using two mirrors rotate the beam path such that it enters the pulse picker.<br /> # There are two possible configurations-long delay(gated mode) and short delay<br /> # In case long delay mode is required,<br /> ## Connect the cable from the LASER controller to the SEED input of the pulse picker controller<br /> ## Set the required frequency on the external function generator<br /> ## Connect the AUX OUT port of the function generator to the EXT. TRIGGER of the pulse picker controller.<br /> ## Connect the MAIN OUT 50 ohm port of the function generator to the input port of the delay generator.<br /> ## Connect the RF port to the pulse picker<br /> ## Pump the OPO<br /> ## Turn ON the function generator, pulse picker controller and delay generator<br /> ## Set the trigger mode to "gate"<br /> # If short delay mode is required,<br /> ## Connect the cable from the LASER controller to the SEED input of the pulse picker controller<br /> ## Connect PULSE MONITOR output of the pulse picker controller to the input port of the delay generator<br /> ## Connect the RF port to the pulse picker<br /> ## Pump the OPO<br /> ## Turn ON the delay generator and pulse picker controller<br /> ## Set the Division Ratio - the factor by which you want the LASER frequency to be divided<br /> ## Set the trigger mode to "internal"<br /> # Press the button to turn ON the RF mode on the pulse picker controller<br /> # You will see two spots in ON mode. A bright one corresponding to the 2nd order of diffraction of the crystal inside the pulse picker and and a less intense one corresponding to the first order of diffraction.<br /> # The beam causing the dim spot should be blocked using one of the irises, so that it doesn't reach the sample.<br /> # Check if there is sufficient contrast between ON and OFF modes of RF using a detector card.<br /> # If not, contact an authorized user for help to adjust the pulse picker.<br /> # Using three mirrors, rotate and align the beam path such that it enters the irises already fixed on the table.<br /> # Fine tune the alignment by following the steps given in the previous section.<br /> # Adjust the last mirror before the beam hits the sample and the sample stage, so that the beam hits the sample.<br /> # A long pass filer is put before the side slit of the streak camera to block out the incident light. Ensure that it is of the correct wavelength.<br /> <br /> === Setting up the Streak Camera ===<br /> [[File:CoolingSystem streakcamera.jpg|100px|thumb|right|Cooling System for Streak Camera]]<br /> [[File:Micrometer for streak camera slit.jpg|100px|thumb|right|Micrometer to control the slit-opening of the streak camera]]<br /> [[File:Power suppplies.jpg|150px|thumb|right|Power Supply Units]]<br /> # Ensure there is enough water in the chiller. <br /> # To turn on the chiller, first press the black switches on both units. This already starts the cooling of the bath. The display on the top unit shows first a temperature and after few seconds, OFF is displayed.<br /> # Give a long press on the OK button (below the display and to the right of the up and down arrows) and the display will show the coolant temperature. This starts the circulation pump and the heater. See image.<br /> # Make sure that the slit before the streak camera is set to zero (fully closed). See image.<br /> # Switch on the computer.<br /> # There are two possible modes. Make the connections according to the mode required.<br /> <br /> ==== Synchroscan Mode ====<br /> * Check which unit is loaded into the Hamamatsu Universal Streak Camera<br /> * If it is not the synchroscan unit M10911, it has to be changed<br /> * Turn the black knob on the right side of the streak camera to release the lock of the unit while supporting it with one hand.<br /> * Carefully pull out the unit with both hands and keep it back in its designated cabinet<br /> * Carefully, load the synchroscan unit M10911 into the streak camera and lock it by turning the black knob<br /> * Connect the SYNC IN and REF OUT cables to the unit. These cables come from the synchroscan delay unit kept on the rack above and are labelled.<br /> * Connect the output of the syncing device controller to the synchroscan delay unit.<br /> * Turn ON the power supplies for the streak camera, monochromator, delay unit for synchroscan, and the power supply for the syncing device which is used to detect the LASER frequency.<br /> * Turn ON the camera by moving the ON/OFF slider<br /> <br /> ==== Slow Single Sweep Mode ====<br /> <br /> * Check which unit is loaded into the Hamamatsu Universal Streak Camera<br /> * If it is not the slow single sweep unit M10913, it has to be changed<br /> * Turn the black knob on the right side of the streak camera to release the lock of the unit while supporting it with one hand.<br /> * Carefully pull out the unit with both hands and keep it back in its designated cabinet<br /> * Carefully, load the slow single sweep unit unit M10913 into the streak camera and lock it by turning the black knob<br /> * Connect the output (AB) of the external delay generator to the TRIG IN port of the slow single sweep unit<br /> * Turn ON the power supplies for the streak camera and the monochromator<br /> * Turn ON the camera by moving the ON/OFF slider<br /> <br /> == Measurement ==<br /> [[File:Streakcamera focus mode.png|300px|thumb|right|Streak Camera Software HPDTA - showing streak camera in focus mode]]<br /> <br /> # Turn on the software HPDTA on the computer by Hamamatsu.<br /> # In the software, open live video and click auto-scale (star button at the bottom right of the LUT control window). A green streak will be visible at the center, this is because the cooling is not yet turned on in the software. <br /> # Turn Cooling ON in the streak camera control palette on the left and you can see the streak vanishing.<br /> # Make sure that the proper filter is mounted just beore the side slit of the streak camera<br /> # Set the central wavelength in the monochromator control palette<br /> # Select the required grating( 200g/mm, 100g/mm and 50g/mm) in the monochromator control palette. Choose 50g/mm if you want a large range and choose 200g/mm if you want a greater resolution<br /> # Also set the required timescale in the streak camera palette<br /> # Turn OFF the lights in the lab as the streak camera measurements are sensitive<br /> # By default, the camera will be in Focus mode, if it is not change the Mode to Focus<br /> # Open the photocathode opening slowly upto 20mm. If necessary go upto 40, but never more than that.<br /> # Open the shutter by clicking on the respective button in the software<br /> # Start increasing the gain from 0 to see the emission on the streak camera. Do not let the gain exceed 20 in focus mode<br /> # Adjust the mirror reflecting light on the sample vertically and horizontally to get maximum signal with minimum gain<br /> # The sample position can also be adjusted, if it aids in bringing in more emitted light to the streak camera<br /> # Also the width of the side slit of the streak camera ( max 3000mm) can be adjusted to gather more emitted light<br /> # Set the appropriate timescale and gain in the control palette.<br /> # In the software control palette, change the Streak Camera Mode from 'Focus' to 'Operate'. Click auto-scale in the live video window.<br /> # Find zero time by adjusting the delay in the delay generator control palette<br /> # Adjust the timescale,delay, gain and photocathode opening for the optimal measurement.<br /> # Freeze the live video<br /> # Select Analog integration tab in the same window and set integration time and number of exposures and get the result of the integration<br /> # Save the data.<br /> # In case the detected light is very weak, you will have to use photon counting mode. For this select photon counting tab instead of analog integration.<br /> # Select a rectangle as the ROI in the brightest part of the spectrum for checking whether the measurement will be accurate.<br /> # The percentage of hits should be less than 5%.<br /> <br /> == Shutdown Procedure ==<br /> <br /> # Make sure you have saved all the data required.<br /> # Close the photocathode opening.<br /> # Close the shutter of the streak camera using the software<br /> # Turn OFF the output of the CHAMELEON COMPACT OPO-VIS using the tablet.<br /> # Turn OFF the software and the streak camera.<br /> # Turn ON the lights<br /> # Press the shutter button of the LASER to close the shutter.<br /> # Turn Ti:Sa LASER key to Standby<br /> # Turn OFF the delay generator, function generator and pulse picker(if used)<br /> # Turn OFF the computer.<br /> # Wait for 20 minutes to turn off the chiller. Press OK key first (turns off pump and heater), then the black switches (turns off cooling). If you only turn off the pump you'll completely freeze the bath water, which takes around three days to melt unassisted.<br /> <br /> == Manuals ==<br /> As it is good practice to make yourself familiar with the manual first, the streak camera and the software manual are located in a drawer of the lab. PDF versions can be accessed under ''J:\FuE4-N4E\Manuals\Machines\Optics Lab 054''.<br /> <br /> == See also ==<br /> * [https://www.hamamatsu.com/us/en/product/category/5001/5011/5048/U13313-01/index.html HPD-TA Software overview]<br /> * [https://www.hamamatsu.com/us/en/product/category/5001/5011/5041/C10910-02/index.html Overview of the streak camera on the Hamamatsu website]<br /> <br /> <br /> [[Category:Geräte - Devices]]<br /> [[Category:Prüfmittel - Measuring Equipment]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=6980 User:Ian.Howard 2019-04-11T14:57:25Z

<p>Ian.Howard: </p> <hr /> <div>[[file:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Division''': FuE4<br /> <br /> '''Group''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> <br /> == Tätigkeitsbeschreibung ==<br /> Group leader of AMOS<br /> <br /> <br /> <br /> <br /> == Links ==<br /> [https://scholar.google.de/citations?user=Me4AkJAAAAAJ&hl=en google scholar profile]<br /> [AMOS]<br /> <br /> [[Category:Mitarbeiter - Employees]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=6979 User:Ian.Howard 2019-04-11T14:43:32Z

<p>Ian.Howard: </p> <hr /> <div>[[file:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> [[user:{{PAGENAME}}/English|English Version]]<br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Funktionsbereich''': FuE4<br /> <br /> '''Aufgabengebiet''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> '''Stellvertreter''': [[User:Dmitry.Busko|Dmitry, Busko]]<br /> <br /> == Tätigkeitsbeschreibung ==<br /> Optical spectroscopy of energy conversion materials.<br /> <br /> == Fertigkeiten/Kenntnisse ==<br /> <br /> === Geräte ===<br /> <br /> === Prozesse ===<br /> <br /> === Software ===<br /> <br /> === Materialien ===<br /> <br /> == [[Abkürzungen - Abbreviations|PVA]] für IMT-Projekte ==<br /> * [[00-000P]]<br /> <br /> == Weitere Aufgaben am IMT ==<br /> <br /> <br /> <br /> <br /> <br /> [[Category:Mitarbeiter - Employees]]<br /> [[Category:F&E4]]<br /> [[Category:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=Category:AMOS&diff=6978 Category:AMOS 2019-04-11T14:41:58Z

<p>Ian.Howard: </p> <hr /> <div>[[file:AMOS_logo_white.png|300px|thumb|right|AMOS Logo]]<br /> <br /> AMOS (Advanced Materials and Optical Spectroscopy) is a sub-group of [[F&E4]] led by [[User:Ian.Howard|Dr. Ian Howard]].<br /> <br /> The AMOS research group, established in 2014, focuses on creating and characterizing optoelectronic materials designed for energy conversion and photonic applications. Optical spectroscopy lies at the heart of our research, with laser labs based around Ti:Sapphire amplifier and oscillator systems allowing us to interrogate our materials with a wide range of experimental techniques. We have a special focus on time-resolved absorption and emission spectroscopies that track dynamic processes from hundreds of femtoseconds to seconds and allow us to understand and improve material function.<br /> <br /> == Information == <br /> <br /> The primary labs of AMOS are 026a and 054 in the basement. A list of equipment in these labs is maintained in the folder J:\FuE4-N4E\Manuals\Optics Labs - 054__026a-Archive . <br /> <br /> Please refer to this folder for detailed information on existing equipment, and maintain and update the folder with information relevant to new setups.<br /> <br /> User setups are described below.<br /> <br /> <br /> <br /> == See also ==<br /> * [http://www.imt.kit.edu/howard.php AMOS group on the IMT website]<br /> <br /> [[Category:F&E4]]<br /> <br /> {{suchbegriffe|Transient Absorption, Streak camera, PLQY, Fluorescence, Phosphorescence, Luminescence, SURMOF, Upconversion, Perovskites}}</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=Category:AMOS&diff=6977 Category:AMOS 2019-04-11T14:38:10Z

<p>Ian.Howard: </p> <hr /> <div>[[file:AMOS_logo_white.png|300px|thumb|right|AMOS Logo]]<br /> <br /> AMOS (Advanced Materials and Optical Spectroscopy) is a sub-group of [[F&E4]] led by [[User:Ian.Howard|Dr. Ian Howard]].<br /> <br /> The AMOS research group, established in 2014, focuses on creating and characterizing optoelectronic materials designed for energy conversion and photonic applications. Optical spectroscopy lies at the heart of our research, with laser labs based around Ti:Sapphire amplifier and oscillator systems allowing us to interrogate our materials with a wide range of experimental techniques. We have a special focus on time-resolved absorption and emission spectroscopies that track dynamic processes from hundreds of femtoseconds to seconds and allow us to understand and improve material function.<br /> <br /> Members <br /> <br /> == See also ==<br /> * [http://www.imt.kit.edu/howard.php AMOS group on the IMT website]<br /> <br /> [[Category:F&E4]]<br /> <br /> {{suchbegriffe|Transient Absorption, Streak camera, PLQY, Fluorescence, Phosphorescence, Luminescence, SURMOF, Upconversion, Perovskites}}</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY/English&diff=6966 AMOS-PLQY/English 2019-03-06T09:06:34Z

<p>Ian.Howard: </p> <hr /> <div><br /> [[File:<File name>|<Display width in pixel>|thumb|right|<Figure caption>]]<br /> <br /> <br /> '''Device name:'''<br /> <br /> '''Operator/Responsible for this device:Dmitry Busko, Vinay Kumar<br /> <br /> '''Position:'''<br /> <br /> '''Device designation:'''<br /> <br /> '''Specifiaction number:'''<br /> <br /> <br /> == Short Description ==<br /> <br /> <br /> == Alternatives ==<br /> Are there other devices at IMT with the same or a similar application? Please name them and their differences or similarities, and link them here. YOu can find the correct link name in the [[Prüfmittel_Liste_-_List_of_Measurement_Devices| list of measurement devices]] or in the [[Liste der Fertigungsmittel - List of Manufacturing Equipment| list of fabrication devices]].<br /> <br /> == Device Specifications ==<br /> (Additional) equipment and functions, e.g. process gasses, wavelengths, resolution, smallest achievable feature size<br /> (Zusätzliche) Ausstattung und Funktionen, z.B. Prozessgase, Wellenlängen, Auflösung, Strukturdimensionen<br /> <br /> == Established Processes ==<br /> Which processes have been compelted successfully with this device, what materials have been structured, testet or processed?<br /> Please don't enter any process parameters and sensible details into the wiki, but add the path to J: network drive where the detaisl are described or link a user who knows about the process.<br /> <br /> == Restrictions ==<br /> What can not and/or should not be done with the device, i.e. are there materials that could impair the performance of the device if they are structured with, e.g. nickel inside the RIE? Are there other precautions that have to be taken for sample preparation?<br /> <br /> == Instructed Users ==<br /> Persons who have recieved an instruction and thus are allowed to operate the device.<br /> Please create a list and link them to the user profiles: <br /> * [[User:Vorname.Nachname | Nachname, Vorname]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY/English&diff=6965 AMOS-PLQY/English 2019-03-06T09:06:03Z

<p>Ian.Howard: </p> <hr /> <div><br /> [[File:<File name>|<Display width in pixel>|thumb|right|<Figure caption>]]<br /> <br /> <br /> '''Device name:'''<br /> <br /> '''Operator/Responsible for this device:'Dmitry Busko, Vinay Kumar'<br /> <br /> '''Position:'''<br /> <br /> '''Device designation:'''<br /> <br /> '''Specifiaction number:'''<br /> <br /> <br /> == Short Description ==<br /> <br /> <br /> == Alternatives ==<br /> Are there other devices at IMT with the same or a similar application? Please name them and their differences or similarities, and link them here. YOu can find the correct link name in the [[Prüfmittel_Liste_-_List_of_Measurement_Devices| list of measurement devices]] or in the [[Liste der Fertigungsmittel - List of Manufacturing Equipment| list of fabrication devices]].<br /> <br /> == Device Specifications ==<br /> (Additional) equipment and functions, e.g. process gasses, wavelengths, resolution, smallest achievable feature size<br /> (Zusätzliche) Ausstattung und Funktionen, z.B. Prozessgase, Wellenlängen, Auflösung, Strukturdimensionen<br /> <br /> == Established Processes ==<br /> Which processes have been compelted successfully with this device, what materials have been structured, testet or processed?<br /> Please don't enter any process parameters and sensible details into the wiki, but add the path to J: network drive where the detaisl are described or link a user who knows about the process.<br /> <br /> == Restrictions ==<br /> What can not and/or should not be done with the device, i.e. are there materials that could impair the performance of the device if they are structured with, e.g. nickel inside the RIE? Are there other precautions that have to be taken for sample preparation?<br /> <br /> == Instructed Users ==<br /> Persons who have recieved an instruction and thus are allowed to operate the device.<br /> Please create a list and link them to the user profiles: <br /> * [[User:Vorname.Nachname | Nachname, Vorname]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-Streak_Camera&diff=4244 AMOS-Streak Camera 2016-06-02T13:42:10Z

<p>Ian.Howard: </p> <hr /> <div><br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> <div style="padding:20px;background:#FDA;">The purpose of these instructions is to give you a quick overview on how to work with the devices. You should still be familiar with the manual and receive a proper introduction from the lab leader or the principal users.</div><br /> <br /> '''Device location''': Optiklabor F&E4-3GP <br /> <br /> '''Lab location:''' [http://www.kit.edu/campusplan/?id=310 Building 310 Basement Room no. 054]<br /> <br /> '''Phone number:''' N.A.<br /> <br /> '''Lab leader:''' [[Benutzer:Bryce.Richards | Prof. Bryce Richards]], [[Benutzer:Ian.Howard | Ian Howard]]<br /> <br /> '''Principal users:''' [[Benutzer:Andrey.Turshatov | Andrey Turshatov]], [[Benutzer:Dmitry.Busko | Dmitry Busko]], [[Benutzer:Michael.Adams | Michael Adams]], [[Benutzer:Michael.Oldenburg | Michael Oldenburg]], [[Benutzer:Vu-Hong.Le | Vu-Hong Le]], [[Benutzer:Nicolo.Baroni | Nicolo Baroni]]<br /> <br /> '''Access:''' The setup is in a class IV laser lab. Only trained users with key may use the setup. The Lab is located in the basement of building 310. Open the door of the basement of B310, go straight ahead and open another door. The new LASER Lab can be found on your left side.<br /> <br /> == Short Description ==<br /> <br /> The streak camera is a device to measure ultra-fast light phenomena and delivers intensity vs. time vs. <br /> wavelength information. <br /> <br /> <br /> Currently the setup in the lab can be used in two configurations: <br /> <br /> a) synchroscan (< 5 ns)<br /> <br /> b) single sweep unit<br /> <br /> == Start-up Procedure and Measurement ==<br /> <br /> <br /> XXXX break this procedure into different parts. Here you have turning on the laser mixed in with setting up the streak camera. Break into sections. A) how to turn on laser A1) how to deliver beam to sample A2) how to deliver to sample through pulse picker. b) how to setup streak camera for synchroscan mode c) how to setup streak camera for single sweep and d) how to setup streak camera for single sweep gated mode. <br /> <br /> 1.Ensure there is enough water in the chiller. Turn on the chiller. <br /> First the mains, and then the button on the chiller. Make sure that the indicator displays green. XXX correct this XXXX<br /> <br /> 2.Mount the sample in the sample holder.<br /> <br /> 3.Make sure that the slit before the streak camera is set to zero (fully closed). (add picture)<br /> <br /> 4.Depending on the configuration used, turn on the respective delay unit, pulse picker and make sure that they are properly connected and configured. XXXX describe these configurations and connections, add diagrams and pictures XXX<br /> <br /> 5.Switch on the computer.<br /> <br /> 6.Turn on the streak camera and also the software on the computer by Hamamatsu. In the software, open live video and click auto-scale. A green streak will be visible at the center, this is because the cooling is not yet turned ON in the software. Turn Cooling ON in the palette on the left and you can see the streak vanishing.<br /> <br /> 7.Turn ON the tablet for controlling the output of the CHAMELEON COMPACT OPO-VIS System with Idler. It has options for different types of output. eg:- TiSa output, SHG, OPO, SHG of OPO etc.<br /> <br /> 8.Ensure that the shutter is closed and the cooling units for the LASER are switched ON. Turn the LASER key to ON position, and wait till the LASER ramps up enough power. Ideally at 800nm the power should be 4W. Set the required wavelength for the Ti:Sa LASER.<br /> <br /> 9.Set the frequency for the pulse picker if required.<br /> <br /> 10.Turn OFF the lights in the lab as the streak camera measurements are sensitive.<br /> <br /> <br /> 13.Make sure the alignment is correct and that the correct filters are mounted so that only the light to be measured is entering the streak camera. XXX how? XXX some pictures<br /> <br /> 14.Start opening up gap for the photocathode slowly by turning the attached micrometer screw. Make sure this is done very slowly and the gap should ideally not exceed 20mm.<br /> <br /> 15.You will be able to see a streak on the live video output. XXX add some screenshots XXX <br /> <br /> 16.Set the appropriate timescale, gain and delay(if required) in the control palette.<br /> <br /> 17.In the software control palette, change the Streak Camera Mode from 'Focus' to 'Operate'. Click auto-scale in the live video window.<br /> <br /> 18.Adjust the timescale, gain and photocathode opening for the optimal measurement.<br /> <br /> 19.Set the required integration time and save the image and data.<br /> In case the detected light is very weak, you will have to use photon counting mode and save the image after setting a threshold value for detecting a hit per pixel.<br /> <br /> <br /> == Shutdown Procedure ==<br /> <br /> 1.Make sure you have saved all the data required.<br /> <br /> 2.Close the photocathode opening.<br /> <br /> 3.Turn OFF the software and the streak camera.<br /> <br /> 4.Turn ON the lights<br /> <br /> 5.Turn OFF the output of the CHAMELEON COMPACT OPO-VIS using the tablet.<br /> <br /> 6.Turn the shutter OFF.<br /> <br /> 7.Turn Ti:Sa LASER key to Standby.<br /> <br /> 8.Turn OFF the delay generator and pulse picker(if used)<br /> <br /> 9.Turn OFF the computer and chiller.<br /> <br /> <br /> <br /> <br /> [[Kategorie:Geräte - Devices]]<br /> [[Kategorie:Prüfmittel - Measuring Equipment]]<br /> [[Kategorie:F&E4]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=Talk:AMOS-Tralala&diff=4213 Talk:AMOS-Tralala 2016-05-27T15:19:29Z

<p>Ian.Howard: Die Seite wurde neu angelegt: „Could you please scan the back section of the Innolas manual with the current and amplifier settings for different optical output powers to have up here as wel…“</p> <hr /> <div>Could you please scan the back section of the Innolas manual with the current and amplifier settings for different optical output powers to have up here as well. Would be good to have a backup copy of that here.</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-Tralala&diff=4198 AMOS-Tralala 2016-05-19T15:28:26Z

<p>Ian.Howard: /* Chopper Wheel */</p> <hr /> <div><br /> <br /> <div style="padding:20px;background:#FDA;">The purpose of these instructions is to give you a quick overview on how to work with the devices. You should still be familiar with the manual and receive a proper introduction from the lab leader or the principal users.</div><br /> <br /> '''Lab name''': Tralala ('''Tr'''ansient '''A'''bsorption '''La'''ser '''La'''boratory) aka Fastlab<br /> <br /> '''Lab location:''' [http://www.kit.edu/campusplan/?id=341 Building 341 (ITG)], room 110<br /> <br /> '''Phone number:''' 29163<br /> <br /> '''Lab leader:''' [[Benutzer:Ian.Howard | Ian Howard]]<br /> <br /> '''Principal users:''' [[Benutzer:Michael.Adams | Michael Adams]], [[Benutzer:Vu.Le | Vu Hong Le]]<br /> <br /> '''Access:''' The building belongs to the [http://itg.kit.edu Institute of Toxicology and Genetics (ITG)], the door is secured with a card reader. To get access to the building with your KIT card you have to bring it to the ITG secretary (Fr. XXX). Additionally, you need a written statement (E-Mail) from the lab leader.<br /> <br /> == Spitfire Laser System ==<br /> Description<br /> === Startup procedure ===<br /> To-Do<br /> === Shutdown procedure ===<br /> To-Do<br /> === Maintenance ===<br /> The water level in the chillers (one outside and one inside the rack box) has to be checked every three months.<br /> <br /> Inside the TCU is a humidity filter that has to be changed roughly every six months. New filters should be kept in stock.<br /> <br /> === Troubleshooting ===<br /> From time to time it occurs that the Spitfire Software fails to connect to the system and does not start. This is usually a problem with the LAN card that can be fixed the following way:<br /> <br /> # Open the "Network and Sharing Center"<br /> # Go to the Adapter settings<br /> # Right-click the Intel LAN Adapter that is connected to the Spitfire and click "Disable"<br /> # Open the Device Manager<br /> # Locate the Intel network card that is connected to the Spitfire. There should be a white icon overlay visible.<br /> # Right-click and enable the device<br /> # Now the blue progress bar in the Spitfire software should start to fill and the software should start.<br /> <br /> == Innolas Laser ==<br /> To-Do<br /> <br /> == Transient Absorption Spectroscopy ==<br /> The Transient Absorption setup is maintained by [[Benutzer:Michael.Adams | Michael Adams]].<br /> <br /> === Initial steps ===<br /> # Turn on the Spitfire laser system (see above)<br /> # Turn on the Thorlabs MC2000 Optical Chopper System<br /> # Turn on the Thorlabs FW102C filter wheel<br /> # Turn on the Thorlabs Delay stage controler (below the table, the switch is on the back)<br /> # Make sure that the tec5 electronics for the detector are powered<br /> # Make sure all devices are connected to the PC<br /> <br /> === Chopper Wheel ===<br /> The chopper wheel reduces the pulse frequency of the 1kHz Spitfire output to 500Hz by blocking every second pulse. The Input signal (TTL) comes from the Spitfire, the Output signal (TTL) has to be connected to the tec5 PCI card inside the lab PC with a custom adapter. The controller has to be set to external reference. In order to halve the pulse frequency the harmonic multipliers have to be set to N=1 and D=2 (because f_ext = f_ref * N / D).<br /> <br /> Futher information can be found on [http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=287 this thorlabs page].<br /> <br /> === Pump light ===<br /> ==== 400nm (SHG of Spitfire) ====<br /> Part of of the Spitfire output passes through the chopper wheel, goes via the delay stage through a beam reducer onto a Beta barium borate (BBO) crystal. This crystal converts the 800nm light to a wavelength of 400nm (frequency doubling). Residual 800nm light is removed with a shortpass filter. Check the quality of the 400nm light. If there is a dark line through the spot change the phase on the chopper wheel controller. <br /> <br /> ==== 355nm or 533nm (Innolas laser) ====<br /> To-Do<br /> <br /> ==== Other wavelengths (TOPAS) ====<br /> To-Do<br /> <br /> === Probe light (white light) ===<br /> The 800nm output of the Spitfire amplifier is focussed into a sapphire crystal (located inside a cage system) to generate a white-light supercontinuum. Check the white light quality after the crystal. If no white light is visible, increase the power with the linear ND filter that is located earlier in the beampath. If the white light flickers unstably reduce the power or carefully move the crystal around. The spot should look smooth and without structure.<br /> <br /> There will be an intense residual 800nm component in the white light that can be filtered out by placing a filter in the white light beampath. Alternatively there is a print-out spatial filter (essentially a black line printed on transparent foil) that can be placed directly in front of the detector inside the spectrometer box. You have to move it around manually so the blocking line is located where 800nm light hits the detector. This is best done in LiveView.<br /> <br /> The white light should exit the cage not collimated but slightly focussed, so that the focus is located at the sample position. To achieve this, move the second lens in the crystal cage.<br /> <br /> After the sample position the light passes the filter wheel and enters the spectrometer box that holds a mirror, a prism and the tec5 detector electronics. With the vertical axis of the mirror inside the box you can correct the height of the beam to properly hit the detector. Use the LiveView mode for this: move the beam up and down and look for the signal maximum. With the horizontal axis you can change the wavelength region to measure. <br /> <br /> === Software ===<br /> The control software for the setup is written in LabVIEW, the project file is located under D:/Users/XXXXXXX/TA_control.lvproj. <br /> <br /> Start and run TA_control.vi. Normally, you will need to run no other VI. Some helper VIs that can be run as standalone tools are located in the "utilities" directory.<br /> <br /> The software can be run in a ''Simulation mode'' that does not need the lab hardware to be connected to the PC. This is useful only for development purposes.<br /> <br /> The software should be closed with the ''Exit Program'' button and - if possible - not with LabVIEW's ''Abort Execution'' button.<br /> <br /> === Measurement ===<br /> <br /> ==== LiveView: Check Signal, Find Zerotime and Set Background ====<br /> Once everything is set up, run LiveView in TA_control. The parameters here are:<br /> * ''number of burst pairs'': When a trigger signal arrives, this is the number of spectra pairs (pump on/off) that are measured in one burst train. You should keep this at 50, values above 200 tend to lead to errors from the tec5 electronics.<br /> * ''number of burst trains'': How many burst trains are to be measured.<br /> * ''Integration time'': This should be set to the time between two laser pulses. For standard operation of the Spitfire amplifier at 1kHz, this has to be set to 1ms accordingly. Otherwise the spectra measurements will be out of sync with the laser.<br /> <br /> Press ''Start'' to begin taking measurements. You need to stop and restart the measurements if you want to change the parameters. After pressing ''Stop'' you have to wait for the current burst train to finish, this is normal.<br /> <br /> In the ''Waveforms'' tab you can see current measured spectra, which is useful for alignment of the white light on the detector. Make sure that the detector is not saturated. You can also see the dT/T signal. If you switch the window back to the TA_control.vi you can manually move the delay stage. This helps you in identifying where zerotime is on the stage (note the stage position in mm).<br /> <br /> You need to make a measurement of the background signal. Block the white light on the table (but leave the pump light on) and press ''Start''. In ''Waveforms 2'' you can see the accumulated spectrum of all the measurements since you last hit ''Start''. There are two graphs, because the pump on/off background can differ in the amount of stray pump light. Use the ''Single Channel Viewer'' to look at a single channel. Usually the signal increases over time at the beginning of a measurement. If this is the case wait until the single channel signal reaches a constant level and restart the measurement. Leave it running until you are satisfied with the quality of your background spectrum, e.g. until the ''Difference between accumuated spectra'' reaches stable values. Save the backgrounds by pressing ''Set backgrounds''. If you want to redo the background measurement reset the active backgrounds first.<br /> <br /> Press ''Exit'' to return to TA_control.<br /> <br /> ==== Generate Stage Position File ====<br /> The positions for the delay stage are loaded from a simple textfile. It has to contain a list of numbers (the stage positions in mm) separated by line breaks. You can create this list manually or use the ''Generate Stage Position File'' dialog. You enter the first position, the last position and where zerotime is on the stage (in mm). You can select at how many positions before and after zerotime you want to perform a measurement and choose between linear and logarithmic spacing. You can then save the file for later reference or manual editing. Close the window by clicking ''Done'', the current positions are carried over to the main TA_control window.<br /> <br /> ==== Wavelength Calibration ====<br /> Which detector channel receives which wavelengths depends on the sample thickness and the way it is mounted as well as the position of the mirror inside the spectrometer box. If any of those parameters are changed, a new wavelength calibration is necessary. Press ''Wavelength Calibration'' in TA_control. You can enter individual integration times for the five calibration measurements. These are performed after you click ''Let's go'' by iterating through the filters in the motorized filter wheel. These filters are:<br /> # 450nm Longpass<br /> # 532nm Bandpass<br /> # 633nm Bandpass<br /> # 730nm Bandpass<br /> # 850nm Bandpass<br /> # 950nm Bandpass<br /> <br /> During normal TA measurements, the 450nm Longpass filter at position 1 is used to remove stray light of the 400nm pump. The wavelength calibration interates through the five bandpass filters and takes a spectrum for each. Usually there is less light in the short-wavelength region, adapt the integration time accordingly to get decent spectra for all filters with enough signal and without saturation. <br /> <br /> The spectra are automatically fitted with a gaussian distribution to get the center channel. Select which wavelength-channel pairs you want to keep in the calibration.You can then save the calibration for later reference or manual editing. Only the selected wavelength-channel pairs are saved. How data is interpolated between them is not part of the calibration. A few possible interpolation methods can be displayed as a preview. Close the dialog by clicking ''Done'', the current calibration is carried over to the main TA_control window.<br /> <br /> ==== Start Measurement ====<br /> Now everything should be ready so you can start the measurement. Go to TA_control's Setup-tab and choose your settings:<br /> * ''Integration time, number of burst trains, number of burst-pairs'': These are the same settings as mentioned above for LiveView. Usually you can leave the integration time at 1ms and the number of burst-pairs at 50 and use only the number of trains to define how long you want to measure at each stage position.<br /> * ''Sensor Work Mode'': Should be set to ExteralTriggerSlope. Refer to the tec5 manual for more information.<br /> * ''Stage positions file, Wavelength calibration'': Select a position or calibration file to load.<br /> * ''Save data directory'': Select the directory where your measurement data should be saved<br /> * ''Base filename'': Enter the filename base without path or file extension. The filename will automatically generated as C:/path/to/file/FILENAME_001.bin, C:/path/to/file/FILENAME_002.bin, and so on. <br /> <br /> You can check the backgrounds, stage positions and wavelength calibration before you start. Once you are ready, press ''Measure TA Spectrum''. <br /> <br /> The spectator window opens and you can watch your dataset grow as it is being measured. You can also import previously measured TA data to compare.<br /> <br /> To be continued...<br /> <br /> == Cryostat ==<br /> To-Do (Philipp?)<br /> <br /> [[Kategorie:Geräte_-_Devices]]<br /> [[Kategorie:F&E4]]<br /> [[Kategorie:AMOS]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4194 AMOS-PLQY 2016-05-17T11:16:44Z

<p>Ian.Howard: </p> <hr /> <div>[[{{PAGENAME}}/English | English Version]]<br /> <br /> <br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> '''Gerätebezeichnung:''' Photoluminescence Quantum Yield System<br /> <br /> '''Geräteverantwortliche/Operateure:''' dmitry.busko<br /> <br /> '''Standort:''' lagert im Keller<br /> <br /> '''Prüfmittel-/Fertigungsmittelnummer:''' XXXX<br /> <br /> '''Spezifikations-Nummer:''' SP-XXXX<br /> <br /> <br /> == Kurzbeschreibung ==<br /> <br /> <br /> == Alternativen ==<br /> <br /> <br /> == Spezifikationen des Geräts ==<br /> <br /> <br /> == Etablierte Prozesse ==<br /> <br /> == Einschränkungen ==<br /> <br /> <br /> == Eingewiesene Nutzer ==<br /> <br /> <br /> [[Benutzer:Dmitry.Busko|Busko, Dmitry]]<br /> <br /> <br /> [[Kategorie:Geräte - Devices]]<br /> [[Kategorie:Prüfmittel - Measuring Equipment]]<br /> [[Kategorie:F&E4]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4193 AMOS-PLQY 2016-05-17T08:36:12Z

<p>Ian.Howard: /* Etablierte Prozesse */</p> <hr /> <div>[[{{PAGENAME}}/English | English Version]]<br /> <br /> <br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> '''Gerätebezeichnung:''' Photoluminescence Quantum Yield System<br /> <br /> '''Geräteverantwortliche/Operateure:''' dmitry.busko<br /> <br /> '''Standort:''' lagert im Keller<br /> <br /> '''Prüfmittel-/Fertigungsmittelnummer:''' XXXX<br /> <br /> '''Spezifikations-Nummer:''' SP-XXXX<br /> <br /> <br /> == Kurzbeschreibung ==<br /> <br /> <br /> == Alternativen ==<br /> <br /> <br /> == Spezifikationen des Geräts ==<br /> <br /> <br /> == Etablierte Prozesse ==<br /> <br /> == Einschränkungen ==<br /> <br /> <br /> == Eingewiesene Nutzer ==<br /> <br /> <br /> [[Benutzer:Dmitry.Busko|Busko, Dmitry]]<br /> <br /> <br /> [[Kategorie:Geräte - Devices]]<br /> [[Kategorie:Prüfmittel - Measuring Equipment]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4192 AMOS-PLQY 2016-05-17T08:34:24Z

<p>Ian.Howard: </p> <hr /> <div>[[{{PAGENAME}}/English | English Version]]<br /> <br /> <br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> '''Gerätebezeichnung:''' Photoluminescence Quantum Yield System<br /> <br /> '''Geräteverantwortliche/Operateure:''' dmitry.busko<br /> <br /> '''Standort:''' lagert im Keller<br /> <br /> '''Prüfmittel-/Fertigungsmittelnummer:''' XXXX<br /> <br /> '''Spezifikations-Nummer:''' SP-XXXX<br /> <br /> <br /> == Kurzbeschreibung ==<br /> <br /> <br /> == Alternativen ==<br /> <br /> <br /> == Spezifikationen des Geräts ==<br /> <br /> <br /> == Etablierte Prozesse ==<br /> <br /> <br /> == Einschränkungen ==<br /> <br /> <br /> == Eingewiesene Nutzer ==<br /> <br /> <br /> [[Benutzer:Dmitry.Busko|Busko, Dmitry]]<br /> <br /> <br /> [[Kategorie:Geräte - Devices]]<br /> [[Kategorie:Prüfmittel - Measuring Equipment]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY/English&diff=4191 AMOS-PLQY/English 2016-05-17T08:32:22Z

<p>Ian.Howard: Die Seite wurde neu angelegt: „{{ers:Geräte-Devices/English}}“</p> <hr /> <div><br /> [[File:<File name>|<Display width in pixel>|thumb|right|<Figure caption>]]<br /> <br /> <br /> '''Device name:'''<br /> <br /> '''Operator/Responsible for this device:'''<br /> <br /> '''Position:'''<br /> <br /> '''Device designation:'''<br /> <br /> '''Specifiaction number:'''<br /> <br /> <br /> == Short Description ==<br /> <br /> <br /> == Alternatives ==<br /> Are there other devices at IMT with the same or a similar application? Please name them and their differences or similarities, and link them here. YOu can find the correct link name in the [[Prüfmittel_Liste_-_List_of_Measurement_Devices| list of measurement devices]] or in the [[Liste der Fertigungsmittel - List of Manufacturing Equipment| list of fabrication devices]].<br /> <br /> == Device Specifications ==<br /> (Additional) equipment and functions, e.g. process gasses, wavelengths, resolution, smallest achievable feature size<br /> (Zusätzliche) Ausstattung und Funktionen, z.B. Prozessgase, Wellenlängen, Auflösung, Strukturdimensionen<br /> <br /> == Established Processes ==<br /> Which processes have been compelted successfully with this device, what materials have been structured, testet or processed?<br /> Please don't enter any process parameters and sensible details into the wiki, but add the path to J: network drive where the detaisl are described or link a user who knows about the process.<br /> <br /> == Restrictions ==<br /> What can not and/or should not be done with the device, i.e. are there materials that could impair the performance of the device if they are structured with, e.g. nickel inside the RIE? Are there other precautions that have to be taken for sample preparation?<br /> <br /> == Instructed Users ==<br /> Persons who have recieved an instruction and thus are allowed to operate the device.<br /> Please create a list and link them to the user profiles: <br /> * [[Benutzer:Vorname.Nachname | Nachname, Vorname]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4190 AMOS-PLQY 2016-05-17T08:31:31Z

<p>Ian.Howard: </p> <hr /> <div>[[{{PAGENAME}}/English | English Version]]<br /> <br /> <br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> '''Gerätebezeichnung:''' Photoluminescence Quantum Yield System<br /> <br /> '''Geräteverantwortliche/Operateure:''' dmitry.busko<br /> <br /> '''Standort:''' lagert im Keller<br /> <br /> '''Prüfmittel-/Fertigungsmittelnummer:''' XXXX<br /> <br /> '''Spezifikations-Nummer:''' SP-XXXX<br /> <br /> <br /> == Kurzbeschreibung ==<br /> <br /> <br /> == Alternativen ==<br /> <br /> <br /> == Spezifikationen des Geräts ==<br /> <br /> <br /> == Etablierte Prozesse ==<br /> <br /> <br /> == Einschränkungen ==<br /> <br /> <br /> == Eingewiesene Nutzer ==<br /> <br /> <br /> [[Benutzer:Dmitry.Busko|Busko, Dmitry]]<br /> <br /> <br /> [[Kategorie:Geräte - Devices]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4189 AMOS-PLQY 2016-05-17T08:29:41Z

<p>Ian.Howard: </p> <hr /> <div>[[{{PAGENAME}}/English | English Version]]<br /> <br /> <br /> [[Datei:platzhalter.jpg|250px|thumb|right|<Bildunterschrift>]]<br /> <br /> '''Gerätebezeichnung:''' Photoluminescence Quantum Yield System<br /> <br /> '''Geräteverantwortliche/Operateure:''' dmitry.busko<br /> <br /> '''Standort:''' lagert im Keller<br /> <br /> '''Prüfmittel-/Fertigungsmittelnummer:''' XXXX<br /> <br /> '''Spezifikations-Nummer:''' SP-XXXX<br /> <br /> <br /> == Kurzbeschreibung ==<br /> <br /> <br /> == Alternativen ==<br /> <br /> <br /> == Spezifikationen des Geräts ==<br /> Spektrum: AM 1.5G, Feld: 90x90 mm^2<br /> <br /> == Etablierte Prozesse ==<br /> <br /> <br /> == Einschränkungen ==<br /> <br /> <br /> == Eingewiesene Nutzer ==<br /> <br /> <br /> <br /> <br /> [[Kategorie:Geräte - Devices]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=AMOS-PLQY&diff=4188 AMOS-PLQY 2016-05-17T08:25:46Z

<p>Ian.Howard: Photoluminescence Quantum Yield Measurement System</p> <hr /> <div>{{ers:Geräte}}</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=4187 User:Ian.Howard 2016-05-17T08:19:40Z

<p>Ian.Howard: </p> <hr /> <div>[[Datei:ian_portrait.png|thumb|500x250px|rechts|Ian]]<br /> <br /> <br /> [[Benutzer:{{PAGENAME}}/English|English Version]]<br /> <br /> == Ian Howard ==<br /> <br /> <br /> <br /> '''Funktionsbereich''': FuE4<br /> <br /> '''Aufgabengebiet''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> '''Stellvertreter''': [[Benutzer:Dmitry.Busko|Dmitry, Busko]]<br /> <br /> == Tätigkeitsbeschreibung ==<br /> Optical spectroscopy of energy conversion materials.<br /> <br /> == Fertigkeiten/Kenntnisse ==<br /> <br /> === Geräte ===<br /> <br /> === Prozesse ===<br /> <br /> === Software ===<br /> <br /> === Materialien ===<br /> <br /> == [[Abkürzungen - Abbreviations|PVA]] für IMT-Projekte ==<br /> * [[00-000P]]<br /> <br /> == Weitere Aufgaben am IMT ==<br /> <br /> <br /> <br /> <br /> <br /> [[Kategorie:Mitarbeiter - Employees]]<br /> [[Kategorie:F&E4]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=User:Ian.Howard&diff=4186 User:Ian.Howard 2016-05-17T08:17:53Z

<p>Ian.Howard: Die Seite wurde neu angelegt: „Ian English Version == Ian Howard == <br /> <br /> <br /> '''Funktionsbereich''': FuE4<br /> <br /> '''Aufgabengebiet''': Advanced Materials and Optical Spectroscopy<br /> <br /> '''Bau''': 310<br /> <br /> '''Raum''': 254<br /> <br /> '''Telefon''': 0721-608-28398<br /> <br /> '''e-mail''': mailto:ian.howard@kit.edu<br /> <br /> '''Stellvertreter''': [[Benutzer:Dmitry.Busko|Dmitry, Busko]]<br /> <br /> == Tätigkeitsbeschreibung ==<br /> Optical spectroscopy of energy conversion materials.<br /> <br /> == Fertigkeiten/Kenntnisse ==<br /> <br /> === Geräte ===<br /> <br /> === Prozesse ===<br /> <br /> === Software ===<br /> <br /> === Materialien ===<br /> <br /> == [[Abkürzungen - Abbreviations|PVA]] für IMT-Projekte ==<br /> * [[00-000P]]<br /> <br /> == Weitere Aufgaben am IMT ==<br /> <br /> <br /> <br /> <br /> <br /> [[Kategorie:Mitarbeiter - Employees]]<br /> [[Kategorie:FuE4]]</div>

Ian.Howard https://www.imt.kit.edu/wiki/index.php?title=File:Ian_portrait.png&diff=4185 File:Ian portrait.png 2016-05-17T08:16:02Z

<p>Ian.Howard: </p> <hr /> <div></div>

Ian.Howard