摘要The photoinduced birefringence in an azobenzene polymer is investigated at different temperatures between -20°C to 50°C. 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/cm2, 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.
Abstract：The photoinduced birefringence in an azobenzene polymer is investigated at different temperatures between -20°C to 50°C. 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/cm2, 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.
XU Hong-Tao;WANG Chang-Shun;PAN Xu; ZHANG Xiao-Qiang;WANG Chuan-Yu;SUN Cun-Ying. Temperature Dependence of Photoinduced Birefringence in an Azobenzene Polymer[J]. 中国物理快报, 2007, 24(2): 450-453.
XU Hong-Tao, WANG Chang-Shun, PAN Xu, ZHANG Xiao-Qiang, WANG Chuan-Yu, SUN Cun-Ying. Temperature Dependence of Photoinduced Birefringence in an Azobenzene Polymer. Chin. Phys. Lett., 2007, 24(2): 450-453.
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