偶氮苯光致异构反饱和吸收的光学双稳态开关的理论研究

大学物理 ›› 2008, Vol. 27 ›› Issue (5): 33-33.

偶氮苯光致异构反饱和吸收的光学双稳态开关的理论研究

黎爱珍[1,2] 李有君[1] 朱伟玲[1,3] 王惠[1]

[1]中山大学光电材料与技术国家重点实验室,广东广州510275 [2]中山大学东校区实验中心,广东广州510006 [3]茂名学院技术物理系,广东茂名525000

出版日期:2008-05-25 发布日期:2008-05-20

Theoretical study on optical bistability switching based on photoisomerization reverse saturable absorption of azobenzene molecules

Online:2008-05-25 Published:2008-05-20

摘要/Abstract

摘要： 讨论了稳态条件下，反饱和吸收的偶氮苯分子光学双稳态的开关性能．先根据偶氮苯光致异构的理论模型，计算了影响偶氮苯反饱和吸收系数的因素，然后理论模拟其反饱和吸收的光学双稳态开关过程．模拟结果表明：基于偶氮苯分子的反饱和吸收可实现双稳态全光开关．增大偶氮苯分子的顺式基态吸收截面，减小热弛豫系数K能够降低反饱和吸收偶氮苯光学双稳态的开关能量；反式吸收截面大不利于反饱和吸收光学双稳态的形成．

关键词: 偶氮苯化合物, 光致异构, 反饱和吸收, 光学双稳态开关

Abstract: The characteristic of optical bistability switching of azobenzene molecules is discussed. First, we compute the coefficient of reverse saturable absorption based on the model of photoisomerization of azobenzene molecules. Second,we simulate and compute the process of bistability switching based on reverse saturable absorption. The result shows that the reverse saturable absorption based on photoisomerization of azobenzene molecules can realize full optical switches of bistability. We also discusse the Trans isomer σT, the Cis isomer σC and the thermal constant K to the optical bistability influence.

Key words: azobenzene molecule, photoisomerization, reverse saturable absorption, optical bistability

中图分类号:

O437.5

黎爱珍[;] 李有君[] 朱伟玲[;] 王惠[]. 偶氮苯光致异构反饱和吸收的光学双稳态开关的理论研究[J]. 大学物理, 2008, 27(5): 33-33.