Implementation of liquid crystal arrays as complex field modulators

Joshua G. Harris; Michael K. Giles

doi:10.1117/12.205799

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28 March 1995 Implementation of liquid crystal arrays as complex field modulators

Joshua G. Harris; Michael K. Giles

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Proceedings Volume 2490, Optical Pattern Recognition VI; (1995) https://doi.org/10.1117/12.205799
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

An architecture for combining two twisted nematic liquid crystal arrays (LCTV's) to independently control amplitude and phase modulation of light is examined experimentally. The arrays are driven with the complex information of the inverse Fourier transform of amplitude-only images. Optical Fourier transformation is used to restore the amplitude images. Methods for experimental determination of amplitude and phase properties of LCTV's are also detailed.

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Joshua G. Harris and Michael K. Giles "Implementation of liquid crystal arrays as complex field modulators", Proc. SPIE 2490, Optical Pattern Recognition VI, (28 March 1995); https://doi.org/10.1117/12.205799

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