| 一种侧链共轭噻吩共聚物增强的三阶非线性光学特性 |
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| 引用本文： | 高潮,邱少君,杜渭松,侯超奇,郭红艳,杨钊飞.一种侧链共轭噻吩共聚物增强的三阶非线性光学特性[J].物理学报,2011,60(4):44211-044211. |
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| 作者姓名： | 高潮 邱少君 杜渭松 侯超奇 郭红艳 杨钊飞 |
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| 作者单位： | (1)西安近代化学研究所,西安 710065; (2)中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安 710119 |
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| 基金项目： | 国家自然科学基金 (批准号:60907012),发光与光信息教育部重点实验室基金(批准号:2010LOI07),西安近代化学研究所开发基金资助的课题. |
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| 摘 要： | 侧链共轭的聚噻吩衍生物具有拓宽的共轭程度,有望成为一类性能优良的三阶非线性光学材料.合成了一种侧链共轭的噻吩共聚物:聚 -噻吩(POTVTh-Th),该聚合物与其均聚物相比,吸收光谱发生了明显的红移,禁带宽度为1.72eV.采用Z扫描技术在800nm下用飞秒激光器研究了该聚合物溶液和薄膜的三阶非线性光学特性,结果表明该共聚物四氢呋喃溶液中的三阶非线性极化率为8.84×10-10esu,聚合物薄膜的三阶非线性极化率为7.25×10-9esu,分别是其
关键词：
侧链共轭
噻吩共聚物
三阶非线性极化率
非线性吸收
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| 关 键 词： | 侧链共轭 噻吩共聚物 三阶非线性极化率 非线性吸收 |
| 收稿时间： | 2010-06-20 |
Enhanced third order nonlinear optical property of a side-chain conjugated thiophene copolymer |
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| Gao Chao,Qiu Shao-Jun,Du Wei-Song,Hou Chao-Qi,Guo Hong-Yan,Yang Zhao-Fei.Enhanced third order nonlinear optical property of a side-chain conjugated thiophene copolymer[J].Acta Physica Sinica,2011,60(4):44211-044211. |
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| Authors: | Gao Chao Qiu Shao-Jun Du Wei-Song Hou Chao-Qi Guo Hong-Yan Yang Zhao-Fei |
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| Institution: | 1) 1)(Xi’an Modern Chemistry Research Institute,Xi’an 710065,China) 2)(State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences(CAS),Xi’an 710119,China) |
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| Abstract: | A novel side-chain conjugated polythiophene copolymer with a narrow band gap of 1.72eV, poly -thiophene (POTVTh-Th), is synthesized by the Stille coupling reaction. The third order nonlinear optical properties of the copolymer are measured by femtosecond Z-scan technique at 800nm. The results indicate that the third order nonlinear susceptibilities of the polymer solution and the film are 8.84×10-10esu and 7.25×10-9esu, respectively, which are 2.17 and 1.68 times bigger than those of its homopolymer, showing enhanced third order nonlinear optical properties and the good nonlinear optical properties of this side-chain conjugated copolymers. |
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| Keywords: | side-chain conjugated polymers thiophene copolymer third order nonlinear optical susceptibility nonlinear absorption coefficient |
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