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Proceedings Paper

Optical real-time kinoform for on-axis phase-only correlation using a liquid crystal television
Author(s): Gilles Paul-Hus; Yunlong Sheng
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Paper 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.

Paper Details

Date Published: 12 January 1994
PDF: 9 pages
Proc. SPIE 2043, Holographic Imaging and Materials, (12 January 1994); doi: 10.1117/12.165555
Show Author Affiliations
Gilles Paul-Hus, COPL/Univ. Laval (Canada)
Yunlong Sheng, COPL/Univ. Laval (Canada)

Published in SPIE Proceedings Vol. 2043:
Holographic Imaging and Materials
Tung H. Jeong, Editor(s)

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