Photodichroics As Active Devices For Optical Correlation

William C. Collins

doi:10.1117/12.958108

30 January 1980 Photodichroics As Active Devices For Optical Correlation

William C. Collins

Proceedings Volume 0202, Active Optical Devices; (1980) https://doi.org/10.1117/12.958108
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

The diffraction limited resolution of photodichroic materials when used for holographic recording make them desirable candidates as spatial light modulators (SLM) in the frequency plane of the Joint Fourier Transform (JFT) correlator. Since the photodichroics generally have photosensitivities which are highly wavelength dependent, KF:LiF is a particularly good choice because its write and read sensitivities coincide with the strong 514nm and 488nm lines of the argon laser. Experimental results are reported on the use of KF:LiF as a SLM in a JFT correlator. Sections of a linear maximal length pseudo-random sequence with time-bandwidth products of up to 2.56 x 106 are successfully cross correlated.

Citation Download Citation

William C. Collins "Photodichroics As Active Devices For Optical Correlation", Proc. SPIE 0202, Active Optical Devices, (30 January 1980); https://doi.org/10.1117/12.958108

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