Real-time atmospheric compensation

Details Real-time atmospheric compensation Real-time atmospheric compensation

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977josa...67..360h&link_type=abstract

Optical Society of America, Journal, vol. 67, Mar. 1977, p. 360-369.

Physics

Optics

55

Adaptive Optics, Atmospheric Optics, Instrument Compensation, Optical Correction Procedure, Real Time Operation, Turbulence Effects, Wave Front Deformation, Aberration, Analog Circuits, Atmospheric Turbulence, Error Correcting Devices, Imaging Techniques, Mirrors, Piezoelectric Transducers, Signal Processing

Scientific paper

An active optical imaging system is developed which is capable of correcting optical wave-front errors in real time at frequencies in the kilohertz range. Wave-front errors due to atmospheric turbulence in the propagation path, as well as optical figure aberrations and wave-front errors due to mechanical and thermal changes may be compensated. The system used an ac shearing interferometer, a parallel analog data processor, and a monolithic piezoelectric active mirror arranged in a closed-loop configuration. This compensation system can be applied to apertures of any size. Experimental results are shown for a system with 21 correction zones.

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