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Response Time Characteristics and Holographic Gratings in an Azo-Dye Doped Photorefractive Polymeric Composite

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摘要 Theoretical and experimental investigation on the applied electric field-and intensity-dependent photorefractive response in a photorefractive polymeric composite is presented.The decay time constant and the corresponding grating-amplitude for the composite consisting of 1-n-butoxy1-2,5-dimethy1-4-(4’-nitrophenylazo)benzene:poly(N-vinylcarbazole):2,4,7-trinitro-9-fluorenone with a weight ratio 44:55:1 were measured.The results revealed that there existed two gratings simultaneously,one was caused by the photorefractive effect,and the other was contributed from the photo-isomerization process.The dynamic process for the photorefractive grating was explained with a modified band transport model.
作者 WANG Feng CHEN Zhi-jian GONG Qi-huang CHEN Yi-wang CHEN Hui-ying 王锋;陈志坚;龚旗煌;陈义旺;陈慧英(Department of Physics,Mesoscopic Physics Laboratory,Peking University,Beijing 100871;Department of Chemistry,Peking University,Beijing 100871)
出处 《Chinese Physics Letters》 SCIE CAS CSCD 1998年第5期351-353,共3页 中国物理快报(英文版)
基金 Supported by the Science Foundation of the Post-Doctor of China,National Natural Science Foundations of China under Grant No.19525412 State Science and Technology Commission of China.
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