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Proceedings Paper

Optically addressed spatial light modulator: applications to spatial filtering
Author(s): Hongchen Zhai; Pierre H. Chavel; Francois Chataux; Shamial Mallick; Guy Premont; Kristina M. Johnson
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Paper 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.

Paper Details

Date Published: 12 July 1993
PDF: 8 pages
Proc. SPIE 1806, Optical Computing, (12 July 1993); doi: 10.1117/12.147851
Show Author Affiliations
Hongchen Zhai, Institut d'Optique Theorique et Appliquee/CNRS (France)
Pierre H. Chavel, Institut d'Optique Theorique et Appliquee/CNRS (France)
Francois Chataux, Institut d'Optique Theorique et Appliquee/CNRS (France)
Shamial Mallick, Institut d'Optique Theorique et Appliquee/CNRS (France)
Guy Premont, Institut d'Optique Theorique et Appliquee/CNRS (France)
Kristina M. Johnson, Univ. of Colorado/Boulder (United States)


Published in SPIE Proceedings Vol. 1806:
Optical Computing

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