| 推拉型偶氮化合物的三阶非线性和光学双稳效应 |
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| 引用本文： | 沈玉全,叶佩弦.推拉型偶氮化合物的三阶非线性和光学双稳效应[J].光学学报,1992,12(3):18-222. |
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| 作者姓名： | 沈玉全 叶佩弦 |
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| 作者单位： | 中国科学院感光化学研究所 北京100101
(沈玉全，傅兴发)，中国科学院物理研究所 北京100088
(叶佩弦，俞祖和)，中国科学院物理研究所 北京100088(张占祥) |
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| 基金项目： | 国家863计划，国家自然科学基金资助 |
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| 摘 要： | 本文报道从推拉型偶氮化合物中测得了非常高的三阶非线性极化率,X~(3)～6×10~(→3)esu.这对于引起光学双稳现象是至关重要的.利用波长为488nm的氩离子激光为光源,从这类材料掺杂的玻璃态聚合物薄膜的Kretschmann型态中,进一步观察到了光学双稳现象.与此同时,联系这类材料的顺反异构化反应历程,从电子吸收机制或光诱导的折射率变化机制对有关问题进行了讨论.
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| 关 键 词： | 光学双稳 三阶 非线性 偶氮苯 |
| 收稿时间： | 1991/3/21 |
Third order optical nonlinearity and bistability observed from push-pull azobenezene compounds |
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| SHEN YUQUAN AND FU XINGFA.Third order optical nonlinearity and bistability observed from push-pull azobenezene compounds[J].Acta Optica Sinica,1992,12(3):18-222. |
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| Authors: | SHEN YUQUAN AND FU XINGFA |
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| Abstract: | Unusual large resonant third-order nonlinear optical susceptibility X(3) of 6×10-3 esu was found in push-pull azobenzenes. This is essential to the onset of bistablity, Optical bistability has been demonstrated in glassy polymer film doped with such compo unds in Kretschmann configuration using 488nm Ar+ laser as light source. The electronic absorptive mechanism or mechanism of optically refractive index change of the observed bistablity is suggested by connecting it with the trans ois photoisomerization process of the investigating dyes. |
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| Keywords: | optical bistability third order nonlinearity azobenzene compounds |
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