Optical real-time kinoform for on-axis phase-only correlation using a liquid crystal television

Gilles Paul-Hus; Yunlong Sheng

doi:10.1117/12.165555

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12 January 1994 Optical real-time kinoform for on-axis phase-only correlation using liquid crystal television

Gilles Paul-Hus, Yunlong Sheng

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Proceedings Volume 2043, Holographic Imaging and Materials; (1994) https://doi.org/10.1117/12.165555
Event: Optics Quebec, 1993, Quebec City, Canada

Abstract

We use a commercially available liquid crystal television (LCTV) for encoding real-time on- axis continuous phase-only filter (POF) in a Vander Lugt type optical correlator. Theory and experiments show that the filter on the LCTV, that has phase mismatching and coupled amplitude modulation, retains a term, that is the true POF with a diffraction efficiency of about 70%, plus a zero order spot. The correlation output is a superposition of the POF correlation with an image of the input. The filter has advantages of on-axis POF correlation: high light efficiency and utilization of all the available space bandwidth product of the LCTV. Optical experimental results are shown.

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Gilles Paul-Hus and Yunlong Sheng "Optical real-time kinoform for on-axis phase-only correlation using liquid crystal television", Proc. SPIE 2043, Holographic Imaging and Materials, (12 January 1994); https://doi.org/10.1117/12.165555

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