Temperature Dependence of Photoinduced Birefringence in an Azobenzene Polymer  

作　　者：许洪涛 王长顺 潘煦 张小强 王传玉 孙存英 

机构地区：[1]Department of Physics, Shanghai Jiao Tong University, Shanghai 200240

出　　处：《Chinese Physics Letters》2007年第2期450-453,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10675083, and the Applied Materials Shanghai Research and Development Fund （0416）.

摘　　要：The photoinduced birefringence in an azobenzene polymer is investigated at different temperatures between -20℃ to 50℃. It is found that there is a peak value of photoinduced birefringence in the temperature dependence of the photoinduced birefringence under a certain pumping intensity. With the pump light in 90mW/cm^2, the peak value of the photoinduced birefringence appeared at about 0℃ C. The effect of temperature on the photoinduced birefringence is discussed using the competition mechanism between the photoinduced reorientation and the thermal random motion.The photoinduced birefringence in an azobenzene polymer is investigated at different temperatures between -20℃ to 50℃. It is found that there is a peak value of photoinduced birefringence in the temperature dependence of the photoinduced birefringence under a certain pumping intensity. With the pump light in 90mW/cm^2, the peak value of the photoinduced birefringence appeared at about 0℃ C. The effect of temperature on the photoinduced birefringence is discussed using the competition mechanism between the photoinduced reorientation and the thermal random motion.

关 键 词：REVERSIBLE OPTICAL STORAGE AZO-DYE AMORPHOUS POLYMERS FILMS ORIENTATION BACTERIORHODOPSIN COPOLYMERS ANISOTROPY 

分 类 号：O43[机械工程—光学工程]