Optically addressed spatial light modulator: applications to spatial filtering

Hongchen Zhai; Pierre H. Chavel; Francois Chataux; Shamial Mallick; Guy Premont; Kristina M. Johnson

doi:10.1117/12.147851

12 July 1993 Optically addressed spatial light modulator: applications to spatial filtering

Hongchen Zhai, Pierre H. Chavel, Francois Chataux, Shamial Mallick, Guy Premont, Kristina M. Johnson

Proceedings Volume 1806, Optical Computing; (1993) https://doi.org/10.1117/12.147851
Event: Topical Meeting on Optical Computing, 1992, Minsk, Belarus

Abstract

We demonstrate and characterize the use of an optically addressed ferroelectric liquid crystal (FLC) spatial light modulator (SLM) as a spatial filter. The photosensor associated with the liquid crystal is a PIN photodiode made of hydrogenated amorphous silicon (a-Si:H). Both the amplitude and the phase of the reflection coefficient are observed to be modulated by the write beam. The filter function can be reconfigured at a submillisecond rate with incoherent illumination.

Citation Download Citation

Hongchen Zhai, Pierre H. Chavel, Francois Chataux, Shamial Mallick, Guy Premont, and Kristina M. Johnson "Optically addressed spatial light modulator: applications to spatial filtering", Proc. SPIE 1806, Optical Computing, (12 July 1993); https://doi.org/10.1117/12.147851

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