| 偶氮聚合物薄膜的全光极化研究 |
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| 引用本文： | 贾亚杰,郭斌,王恭明.偶氮聚合物薄膜的全光极化研究[J].强激光与粒子束,2005,17(Z1):193-197. |
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| 作者姓名： | 贾亚杰 郭斌 王恭明 |
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| 作者单位： | 1. 复旦大学,光科系,上海,200433
2. 中国科学技术大学,高分子材料系,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金资助课题(60178030, 50025309, 90201016) |
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| 摘 要： | 报告了分散红共聚物膜HMMM-DR1,HMMM-DR19和偶氮侧链聚合物膜PCN6和PCN2的合成和制备, 并以HMMM-DR1和PCN6为代表比较研究了这两种具有不同吸收性质材料的全光极化特性,研究了他们的实时极化和弛豫过程,对他们的全光极化性质作了最基本的表征.研究了倍频光吸收对薄膜光极化效率的影响,讨论了偶氮聚合物材料光诱导二阶非线性极化率的效率和倍频光透射率之间的折衷关系,这对实用化的全光器件的研制是至关重要的.实验确证了在PCN6薄膜中实现了准相位匹配.对厚膜中光诱导二阶非线性极化率的弛豫抑制效应作出解释.
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| 关 键 词： | 全光极化 偶氮聚合物膜 准相位匹配 二次谐波产生 |
| 文章编号： | 1001-4322(2005)S0-0193-05 |
| 修稿时间： | 2004年11月22 |
Research of all-optical poling of azobenzene polymer films |
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| JIA Ya-jie,GUO Bin,WANG Gong-ming.Research of all-optical poling of azobenzene polymer films[J].High Power Laser and Particle Beams,2005,17(Z1):193-197. |
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| Authors: | JIA Ya-jie GUO Bin WANG Gong-ming |
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| Institution: | JIA Ya-jie1,GUO Bin2,WANG Gong-ming1 |
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| Abstract: | Two kinds of azobenzene polymers (including four samples: films of HMMM-DR1, HMMM-DR19 and films of side-chain azobenzene polymers PCN_6 and PCN_2) were synthesized and prepared. The HMMM-DR1 and PCN_6 were studied and compared with all-optical poling (AOP) technique. Their poling and decaying process were studied and the fundamental AOP properties were described. Double frequency absorption dependence of AOP efficiency of thin films and the trade-off relationship between efficiency of photo-induced second order polarizability of the azobenzene and the transmission efficiency of double frequency were investigated, which are critically important to practical all-optical devices. The quasi-phase matching in the thin film PCN_6 was proved and relaxation retardation effect of photo-induced second order polarizability in thick films was interpreted. |
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| Keywords: | All-optical poling Azobenzene polymer film Quasi-phase matching Second harmonic generation |
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