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The study of laser-induced polarization grating in azo-dye doped liquid crystals

The laser-induced holographic gratings in the azo-dye-doped liquid crystals have been investigated by changing the temperature, and the concentration of the sample, the intensity of the two writing beams, and the polarization of probe beams. The cw Nd:YAG laser has been employed as the writing beams and the cw He-Ne laser has been employed as a real-time probe beam to detect the first order diffraction singals. The gratings are the results of photo-isomerization of azo dye and the structure alignment of liquid crystals. The model has been established to explain the first order diffraction signals, the mechanism of gratings formation and the temperature dependence.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0712104-103601
Date12 July 2004
CreatorsWu, Chie-chang
ContributorsI-Min Jiang, Der-Jun Jang, Chie-Tong Kuo, Dong-Po Wang, Tsai, Ming-Shan
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0712104-103601
Rightsoff_campus_withheld, Copyright information available at source archive

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