1 June 1980 Design Of A Thermal Blooming Cell For Use In Evaluating Adaptive Optics
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An instrumentation system has been designed for the evaluation of thermal blooming compensation. The purpose is to investigate the maximization of 10.6 um CO2 laser radiation in the target plane through maximization of the return 3-5 um radiation from the laser-induced "hot spot" by using a pinhole sensor and a slow dither algorithm. The adaptive optical component to be used in the evaluation is a three-actuator modal deformable mirror supplied to the USAF by Perkin-Elmer Corporation. This paper deals primarily with the design of a thermal blooming cell that will be used for simulating atmospheric path lengths of several kilometers within a laboratory setup where the total path length is limited to a few meters. The theory required to perform the scaling is currently available in the literature. We present it in a format designed to aid the optical engineer, whose primary concern is the evaluation of an adaptive optical system for thermal blooming compensation. The interplay of the many parameters that may be varied is illustrated in graphical form to facilitate choices. As an example, we included our design for a one-meter cell to be incorporated in the slow dither experiment.
Bruce Pierce, James Harvey, Andrew Piekutowski, William MacInnis, "Design Of A Thermal Blooming Cell For Use In Evaluating Adaptive Optics," Optical Engineering 19(3), 193381 (1 June 1980). https://doi.org/10.1117/12.7972523 . Submission:

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