Transmissive liquid crystal light-valve for near-infrared applications

Transmissive liquid crystal light-valve for near-infrared applications

An optical valve is realized by associating a nematic liquid crystal layer with a Cr-doped gallium arsenide as a photoconductive substrate. The light-valve is shown to efficiently operate in transmission at 1.06 μm optical wavelength. The optical phase shift and refractive index change are measured...

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Veröffentlicht in:Applied optics (2004) 2013-08, Vol.52 (22), p.E73-E77
Hauptverfasser: Bortolozzo, Umberto, Residori, Stefania, Huignard, Jean-Pierre
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Sprache:eng
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Chromium
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container_issue 22
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container_title Applied optics (2004)
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creator Bortolozzo, Umberto
Residori, Stefania
Huignard, Jean-Pierre
description An optical valve is realized by associating a nematic liquid crystal layer with a Cr-doped gallium arsenide as a photoconductive substrate. The light-valve is shown to efficiently operate in transmission at 1.06 μm optical wavelength. The optical phase shift and refractive index change are measured as a function of the incident light intensity and of the voltage applied. Additionally, the light-valve is shown to act as a self-defocusing medium. Combining transmissive properties and nonlinear features, applications for dynamic holography in the near-infrared region of the spectrum can be envisaged.
doi_str_mv 10.1364/AO.52.000E73
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subjects Chromium
title Transmissive liquid crystal light-valve for near-infrared applications
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