Dual frequency nematic liquid crystal spatial light modulator with modulation depth 0-2pi and operation rate in hundreds Hz region

Leonid A. Beresnev; Gary W. Carhart; David Campbell; John D. Gonglewski; David Charles Dayton

doi:10.1117/12.451969

6 November 2002 Dual frequency nematic liquid-crystal spatial light modulator with modulation depth 0-2π and operation rate in hundreds Hz region

Leonid A. Beresnev, Gary W. Carhart, David Campbell, John D. Gonglewski, David Charles Dayton

Author Affiliations +

Proceedings Volume 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV; (2002) https://doi.org/10.1117/12.451969
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The experimental search of the shape of electrical voltage is presented for controlling the optical phase modulator based on dual frequency nematic liquid crystal. Two basic approaches were tested. One is based on universal relation between two driving frequencies, below and above inversion point, respectively. Another approach uses the combination of pulses of both frequencies, which allow us, at first, to provide the fast transition between chosen retardations and , at second, to hold final retardation for the necessary duration.

Citation Download Citation

Leonid A. Beresnev, Gary W. Carhart, David Campbell, John D. Gonglewski, and David Charles Dayton "Dual frequency nematic liquid-crystal spatial light modulator with modulation depth 0-2π and operation rate in hundreds Hz region", Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, (6 November 2002); https://doi.org/10.1117/12.451969

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