Laboratory implementation of optimal filter algorithms for coupled spatial light modulators

Stanley E. Monroe Jr.; Colin Soutar; Richard D. Juday

doi:10.1117/12.160296

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25 October 1993 Laboratory implementation of optimal filter algorithms for coupled spatial light modulators

Stanley E. Monroe Jr., Colin Soutar, Richard D. Juday

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Proceedings Volume 1959, Optical Pattern Recognition IV; (1993) https://doi.org/10.1117/12.160296
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The classical matched filter used as the basis for optical correlation filters requires a spatial light modulator (SLM) which can effect fully complex modulation. Practical (single) SLMs cannot achieve this modulation, but many can be made to operate in a `phase-mostly' or `amplitude-mostly' mode. Successful correlators have been constructed using phase-mostly SLMs in the filter plane by disregarding the usually small coupling of amplitude. During the last few years, new theories have been developed on the construction of filters for coupled modulators for a variety of metrics. The liquid crystal cell modulator, which can be operated in a variety of coupled modes, presents a unique opportunity to implement these algorithms. This paper reports on such laboratory measurements.

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Stanley E. Monroe Jr., Colin Soutar, and Richard D. Juday "Laboratory implementation of optimal filter algorithms for coupled spatial light modulators", Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); https://doi.org/10.1117/12.160296

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