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Genetic optimization of modulation characteristics for two twisted nematic liquid crystal spatial light modulators

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Abstract

A single twisted nematic liquid crystal spatial light modulator may suffer from coupled amplitude modulation and a phase modulation capability of less than 2π, although almost all panels can achieve π. Two twisted nematic liquid crystal panels can be combined in an optical system to produce a total phase modulation of at least 2π, and a minimal coupled amplitude modulation. A genetic algorithm is used to optimize the combined modulation characteristics of two liquid crystal panels in a multiplicative architecture. Simulation results and experimental verification are presented which show a substantial reduction in the combined amplitude modulation, and a total phase modulation of 2π.

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Authors and Affiliations

  1. Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, 5005, Australia

    Thu-Lan Kelly & Jesper Munch

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  1. Thu-Lan Kelly
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  2. Jesper Munch
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Kelly, TL., Munch, J. Genetic optimization of modulation characteristics for two twisted nematic liquid crystal spatial light modulators. Optical and Quantum Electronics 31, 515–523 (1999). https://doi.org/10.1023/A:1006927430793

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  • DOI: https://doi.org/10.1023/A:1006927430793

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