期刊
APPLIED PHYSICS LETTERS
卷 101, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4760227
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资金
- Polish National Science Center [DEC-2011/01/B/ST8/03317]
We report on optical phase conjugation phenomenon observed in chiral nematic liquid crystal showing band gap type Bragg reflection. The phase conjugate to the signal beam is observable only in the small temperature interval when the Bragg condition is fulfilled and only for circularly polarized light. The optical phase conjugation signals were observed at low cw laser light intensities (<100 mW/cm(2), lambda = 532 nm). Estimated value of third order optical susceptibility chi((3)) = 2.8 x 10(-17) m(2)/V-2 attributed to enhancement due to photoisomerisation of azo-dye (disperse red 1) inducing molecular reorientation process of liquid crystal molecules. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4760227]
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