| Bi2S3纳米复合材料的非线性光学性质 |
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| 引用本文： | 梁志坚,顾玉宗,唐福龙,干福熹,余保龙,毛艳丽,尹国盛.Bi2S3纳米复合材料的非线性光学性质[J].光学学报,2000,20(3):414-418. |
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| 作者姓名： | 梁志坚 顾玉宗 唐福龙 干福熹 余保龙 毛艳丽 尹国盛 |
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| 作者单位： | 1. 中国科学院上海光学精密机械研究所,上海,201800
2. 河南大学物理系,开封,475001 |
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| 基金项目： | 国家自然科学基金!资助项目 (批准号 :5970 2 0 0 2 ) |
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| 摘 要： | 利用单光束 Z扫描技术 ,在波长为 1 .0 64μm、脉宽为 38ps条件下测定了不同热处理条件下表面包覆纳米 Bi2 S3 掺杂有机改性硅酸盐材料的三阶光学非线性。结果发现室温下自然干燥的样品和在 N2 气氛下 1 50℃加热处理 2小时后的样品的三阶光学非线性极化系数分别为5.8× 1 0 -1 3 esu和 3.7× 1 0 -1 2 esu。后者的三阶光学非线性极化系数比前者几乎大一个数量级。显然 ,适当的热处理能增强样品的三阶光学非线性。对此现象进行了分析和讨论。
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| 关 键 词： | 三阶光学非线性 Z扫描 表面包覆Bi_2S_3纳米粒子 有机改性硅酸盐 |
| 收稿时间： | 1999/4/28 |
Optical Nonlinearity of Bi2S3 Nanocomposite |
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| Liang Zhijian,Gu Yuzong,Tang Fulong,Gan Fuxi,Yu Baolong,Mao Yanli,Yin Guosheng.Optical Nonlinearity of Bi2S3 Nanocomposite[J].Acta Optica Sinica,2000,20(3):414-418. |
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| Authors: | Liang Zhijian Gu Yuzong Tang Fulong Gan Fuxi Yu Baolong Mao Yanli Yin Guosheng |
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| Abstract: | The third-order optical nonlinear susceptibilities χ(3) of coated Bi2S3 nanoparticles doped organically modified sol-gels under different thermal treatment conditions have been measured using the Z-scan technique with 38 ps pulse excitation at 1.064 μm. The χ(3) for the sample dried at room temperature is 5.8×10-13 esu, and for the sample heated at 150℃ for 2 h in a nitrogen atmosphere is 3.7×10-12 esu. It is clear that the χ(3) of the latter is larger than that of the former. Mechanism for the effects is discussed. |
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| Keywords: | third order optical nonlinearity Z scan coated Bi 2S 3 nanoparticle organically modified sol gels |
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