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Azo optical properties of the photosensitive material and potential applications

Author: FanShengFa
Tutor: LuoDuanBin
School: East China University of Science and Technology
Course: Optics
Keywords: Azopolymer Nonlinear Optical Properties Photoisomerization Light-induced birefringence Optical Switch
CLC: O437
Type: Master's thesis
Year: 2011
Downloads: 139
Quote: 0
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Abstract


In this article, we systematically introduced azo polymer optical properties ( mainly non-linear optical properties ) and potential applications. Nonlinear optics in the laser after the advent of rapid development and become an important branch of optics , from a technical field to field of study, nonlinear optics and more widely . Azo polymer optical switches , optical limiting , optical communications , optical storage and other aspects of a very wide range of applications . This article is the first part of the organic dyes class nonlinear optical properties of polymeric materials and application brief . Including light-induced birefringence , photoisomerization , dichroic light-induced , light-induced motion and surface molecules gate structure and the optical effects of azo polymers . Application highlights azo polymer material optical storage, all-optical switching principle and development status . This last part is divided into three experiments were discussed : 1, azobenzene photosensitive material of the light -induced nonlinear optical effect. This experiment is the use of Z-Scan technology discusses azobenzene polymer film as a result of light-induced nonlinear refractive index anisotropy changes . 2 , azobenzene materials and light-induced waveguides guided wave experiments . In this study we have caused through non- coherent light light-induced molecular changes in the direction of Disperse Red 13 doped PMMA film found in dark solitons , and the first to achieve a non- coherent light waveguides induced spatial dark solitons , the photosensitive azobenzene material is not sensitive to white light of the light guide , and get good results . 3 , azo dyes photoinduced birefringence in optical attenuation aspects of applied research . In this experiment, we explored Disperse Red 13 doped PMMA polymer material light-induced birefringence , and use two methods for adjusting the light transmittance 632.8nm probe . One is the pump beam power absorbed by the sample thermal effects caused when changing the pump light energy transmittance of light can be tuned probe , we call light control can adjust the light attenuation effect or optical tuning ; other is the pump beam power in certain circumstances , the direct control of sample temperature , when changing the temperature of the sample probe can be tuned light transmission , called temperature tunable optical attenuation effects .

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CLC: > Mathematical sciences and chemical > Physics > Optics > Nonlinear optical ( light and matter)
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