对6-(4-((4-(十八烷氧基-)苯基)二氮烯基)苯氧基)-1-己醇(E-1-ol)的光致变色、双折射和全息光存储特性进行了研究.以488nm的氩离子(Ar^+)激光为抽运光,632.8nm的氦氖(He—Ne)激光为探测光,研究了透射信号强度随时间的变化关系;在10mw~160mW的范围内,研究了透射信号强度的最大值随抽运光功率的变化;经计算,在各抽运光功率下,获得的光致双折射值(δn)达10^-2量级,最大激光功率下,获得的δn为2.8×10^-2.对透射信号强度随时间的变化曲线进行了理论拟合,得出曲线的上升和下降符合双指数增长和衰减,时间响应常量分别是:上升阶段:t1=4.8S,t2=85.8s;下降阶段:t1=1.9s,t2=27.6s.用等强度s偏振的两束Ar^+激光为写入光,He—Ne光为读出光,研究了衍射信号强度随时间的变化及写入光功率改变时,衍射信号强度最大值与写入光功率的变化关系;对衍射信号强度随时间变化的动力学过程进行了理论拟合,得出光栅生长和衰减也有快和慢两个过程,光栅生长时间响应常量为:t1=3.9s,t2=33.9s,光栅衰减时间响应常量为t1=1.8S,t2=60.1s.
A kind of azobeneze molecule, (E)-6-(4-((4-(octadecyloxy) phenyl) diazenyl) phenoxy) hexan-1-ol (E-1-ol),was synthesized, which was doped into poly (methyl methacrylate) (PMMA) films as light storage material. The photochromism, photoinduced birefringence,and holographic recording properties in the PMMA films containing E-1-ol were studied. The E-1-ol underwent a reversible trans-cis-trans isomerization in the polymer matrix. The photoinduced birefringence was investigated at various recording beam intensities of Ar^+ laser (488 nm) beam. A reversible hologram was recorded and the dependence of the first order diffraction efficiency on the recording beam intensities was also presented.