Coherent amplification by multilayer nematic liquid crystal cell

Xiudong Sun; Yanbo Pei; Fengfeng Yao

doi:10.1117/12.792158

11 March 2008 Coherent amplification by multilayer nematic liquid crystal cell

Xiudong Sun, Yanbo Pei, Fengfeng Yao

Proceedings Volume 6984, Sixth International Conference on Thin Film Physics and Applications; 69843B (2008) https://doi.org/10.1117/12.792158
Event: Sixth International Conference on Thin Film Physics and Applications, 2007, Shanghai, China

Abstract

Beam coupling theory for the nonlocal Raman-Nath gratings was developed, which showed that the gain initially increased exponentially with the sample thickness, then deviated from the exponential relation and lowered gradually. It was predicted that large thickness and high intensity sensitivity were simultaneously necessary for the sample to obtain larger gain. The quantitative relation between the signal gain and the sample thickness was investigated experimentally by using a multilayer photorefractive liquid crystal structure to increase the overall interaction length, and the experimental result fitted the theory nicely.

Citation Download Citation

Xiudong Sun, Yanbo Pei, and Fengfeng Yao "Coherent amplification by multilayer nematic liquid crystal cell", Proc. SPIE 6984, Sixth International Conference on Thin Film Physics and Applications, 69843B (11 March 2008); https://doi.org/10.1117/12.792158

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KEYWORDS

Liquid crystals

Multilayers

Diffraction gratings

Diffraction

Modulation

Detection theory

Dielectrics

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