Acousto-Optic Beam Sampler, Part III: Diffraction Experiments at 10.6 micrometers.
BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD
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This report deals with the results of acousto-optic diffraction experiments in air at 10.6 micron. The laser used for the experiments was operated in a single mode and also a multimode configuration with output powers between 1 to 35 watt. A simple Lead-Tin-Telluride detector was used to observe the beam diffracted by ultrasonic acoustic fields. Typical results are presented to illustrate the diffraction by standing and by progressive acoustic fields. Detailed experiments were performed to investigate the dependence of the acousto-optic diffraction on incident laser power, acoustic drive voltage and angle of incidence.