| 光折变聚合物中斩波调制对二波耦合增益系数的增强效应 |
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| 引用本文： | 袁保红,陈钟贤,姜永远,孙秀冬,周忠祥,姚凤凤. 光折变聚合物中斩波调制对二波耦合增益系数的增强效应[J]. 物理学报, 2002, 51(7): 1512-1516 |
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| 作者姓名： | 袁保红 陈钟贤 姜永远 孙秀冬 周忠祥 姚凤凤 |
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| 作者单位： | 哈尔滨工业大学应用物理系,哈尔滨150001 |
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| 基金项目： | 国家自然科学基金 (批准号 :698780 0 6);国家教育部优秀青年教师基金资助的课题 |
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| 摘 要： | 通过二波耦合测量了光折变聚合物PVK:5CB:C60中的耦合增益系数,并利用斩波调制技术实现了二波耦合增益系数的增强.研究了最佳斩波频率及处于此频率下的耦合增益系数随外加电场、入射总光强、光栅波矢的关系.关键词：光折变聚合物二波耦合增益系数
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| 关 键 词： | 光折变聚合物 二波耦合 增益系数 |
| 收稿时间： | 2001-10-28 |
| 修稿时间： | 2001-10-28 |
Gain enhancement by chopping technology in a photorefractive composite |
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| Yuan Bao-Hong,Chen Zhong-Xian,Jiang Yong-Yuan,Sun Xiu-Dong,Zhou Zhong-Xiang and Yao Feng-Feng. Gain enhancement by chopping technology in a photorefractive composite[J]. Acta Physica Sinica, 2002, 51(7): 1512-1516 |
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| Authors: | Yuan Bao-Hong Chen Zhong-Xian Jiang Yong-Yuan Sun Xiu-Dong Zhou Zhong-Xiang Yao Feng-Feng |
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| Abstract: | We measured the gain efficiency in PVK:5CB:C 60 composite by two wave mixing and carried out enhancement of the gain efficiency through chopping technique. Also, we studied the relations of the optimal chopping frequency and gain efficiency at the optimal chopping frequency with three experimental parameters: external applied electric field, total incident intensity, and grating wave vector. |
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| Keywords: | photorefractive polymer two wave mixing gain coefficient |
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