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Summary of Contents for AeroDiode AOM Series
- Page 1 User Manual AOM Series Fiber coupled AOM – Free Space AOM & RF Drivers AeroDIODE - Institut d’optique d’Aquitaine - Rue François Mitterrand 33400 Talence - France - Tél.: +33 (0)6 27 69 41 62 www.AeroDIODE.com...
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Page 2: Table Of Contents
Contents Revision Sheet ..........................2 General information ....................... 3 Definitions ........................3 General warning ......................3 Safety Instructions ........................4 2.1. AOM Safety instruction ....................4 2.2. RF Driver Safety instruction .................... 4 2.3. Contact ..........................5 Package Content ........................5 Absolute Maximum Ratings .................... -
Page 3: Revision Sheet
Eigth version – updated with RF power for the various models V1.8 13/09/2024 AMO Add RF power / voltage relationship Disclaimer : Information in this document is subject to change without notice. Copyright © AeroDIODE Bât. IOA, rue François Mitterrand 33400 Talence – France www.AeroDIODE.com Page 2/17 – v1.8... -
Page 4: General Information
1. General information Please read this manual carefully. It describes the hazard the user might be exposed to while using the product. It also explains in details how to use the product in the safest and most efficient possible way. The safety of any system incorporating the product is the responsibility of the assembler of the system. -
Page 5: Safety Instructions
WARNING The maintenance and servicing of the AOM should NOT be executed by the end user : only AeroDIODE is able to maintain the AOM. 2. Safety Instructions 2.1. AOM Safety instruction... -
Page 6: Contact
2.3. Contact If you have any question about the AOM module, please contact AeroDIODE : www.aerodiode.com 3. Package Content The AOM modules comes with: • 1 AOM module with 900 µm fiber and 2* FC/APC fiber connectors OR 1 Free-Space AOM with adapted mounting base OR 1 dual output AOM with 900 µm fiber and 3* FC/APC... -
Page 7: Rf Driver
For Free-space AOM: Model (wavelength/RF frequency) Typical RF power (W) Absolute Max RF power (W) 400 / 100 MHz 400 / 200 MHz 532 / 80 MHz 532 / 200 MHz 632 / 80 MHz 632 / 200 MHz 780 / 200 MHz 850 / 100 MHz 850 / 200 MHz 940 or 1064 / 100 MHz... -
Page 8: Free-Space Aom
5.1.2. Free-space AOM For free-space AOM, a specific mounting plate is provided. This plate has to be screwed to the AOM on one side, and to a M4 optical post on the other side. This would help to mount the AOM onto an optical table (see below). - Page 9 Caution : Place the module on a heat dissipating surface (an optical table works fine). Letting the RF driver in air with no dissipating surface leads to overheating and permanent damage. 5. Connect a 24V >0.5A power supply to the RF driver Caution The RF power shall not be set over the maximum diffraction efficiency level.
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Page 10: How To Control The Rf Power Level And The Rf Frequency
A 20dB attenuator (not using an attenuator may cause permanent damage to the oscilloscope) A RF driver An AWG (or AeroDIODE TOMBAK) A 24 VDC power supply 2 SMA/SMA or SMA/BNC cables (according to your AWG and scope) Page 9/17 – v1.8... -
Page 11: Frequency Measurement
Oscilloscope 20dB attenuator « RF out to AOM » output AWG / Tombak driver « Sync In » input 5.3.1. Frequency measurement : Adjust your AWG parameter to get a +5V offset (50 Ohm impedance) signal. Connect your SMA/SMA cable or SMA/BNC cable between the “RF out to AOM” output from the driver to the 20 dB attenuator which is connected to one of the oscilloscope channels. -
Page 12: Max Power Measurement
Figure 3 : Monitoring of the RF frequency 5.3.2. Max power measurement : Keep the same setup. Display the RMS voltage on your oscilloscope. Figure 4 : Monitoring of the RMS voltage of the RF signal ������×�� ² ������ You can calculate the RF power by applying the following formula: �� ������... -
Page 13: Modulation Frequency Measurement
If the measured power differs from what’s indicated in the test repot, you can adjust it rotating clockwise or counter-clockwise with a screwdriver (Ø 3mm – Multiturn) the screw which is located below the “RF level adjust” label in the RF driver. 5.3.3. - Page 14 If the RF driver is both analog and numeric (TTL) : refer to the switch position (part 5.2) and do both previous measurements. Figure 7 RF output power variation with applied modulation voltage into analog or numeric RF driver Page 13/17 – v1.8...
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Page 15: Example Of Applications
To setup your pulse picker, you need : A fiber-coupled or free-space AOM A RF driver An AeroDIODE TOMBAK pulse-picker synchronization tool A laser source (with a triggering frequency output or a photodetector to detect the pulse frequency) A photodetector... -
Page 16: St Order Diffraction With A Free-Space Aom
: A free-space AOM with mounting adapter An optical post or a specific translation or tilted stage. A RF driver An AWG (or AeroDIODE Tombak) A laser source (collimated or with an external collimator) A photodetector SMA/SMA and SMA/BNC cables... - Page 17 Make sure the AOM input beam diameter is in the range of the free-space AOM acceptable beam diameter. This will help to get the better diffraction efficiency. Move the free-space AOM in order to focus at best the input beam into the AOM slot. If your setup is adjusted, you should see the zero order (non-diffracted beam) and the first order (diffracted).
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Page 18: Typical Insertion Losses
6.2.1. Typical insertion losses Figure 10 Typical insertion losses as a function of the input wavelength into AOM various models 6.2.2. Typical AOM RF tunability Figure 11 AOM RF tunability for each of the AOM RF frequencies (1550 nm models). Note that 200 MHz models in the 780- 1100 nm range have lower minimum loss than what is shown above.
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