Phase modulation characteristic of a liquid crystal television applied on a joint transform correlator

Sergio F. S. Santos; Armindo L. V. S. Lage; Augusto O. S. Gomes

doi:10.1117/12.169482

1 March 1994 Phase modulation characteristic of a liquid crystal television applied on a joint transform correlator

Sergio F. S. Santos, Armindo L. V. S. Lage, Augusto O. S. Gomes

Proceedings Volume 2237, Optical Pattern Recognition V; (1994) https://doi.org/10.1117/12.169482
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The phase-modulating capability of a commercial LCTV has been measured and its application in a joint transform correlator, using a single spatial light modulator, is discussed. The maximum LCTV phase depth obtained is closed to (pi) /2 and a small cross-coupling amplitude modulation is observed. Simulation and experimental results are obtained for the phase joint transform correlator, where the wavefront error, due to the LCTV, is corrected with a phase conjugation technic.

Citation Download Citation

Sergio F. S. Santos, Armindo L. V. S. Lage, and Augusto O. S. Gomes "Phase modulation characteristic of a liquid crystal television applied on a joint transform correlator", Proc. SPIE 2237, Optical Pattern Recognition V, (1 March 1994); https://doi.org/10.1117/12.169482

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KEYWORDS

Phase shift keying

Phase modulation

Optical correlators

Joint transforms

Modulation

Fourier transforms

Liquid crystals

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