| Intensity-Dependent Optical Nonlinear Absorption and Refraction of Gold Nanorods |
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| 作者姓名： | 龚红梅 周张凯 肖思 宋浩 苏雄睿 李敏 王取泉 |
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| 作者单位： | [1]Department of Physics, Wuhan University, Wuhan 430072 [2]Key Laboratory of Acoustic and Optic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10534030 and 10474075. |
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| 摘 要： |
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| 关 键 词： | 金纳米棒 光学非线性吸收 光强度 水溶液 |
| 收稿时间： | 2007-07-01 |
Intensity-Dependent Optical Nonlinear Absorption and Refraction of Gold Nanorods |
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| GONG Hong-Mei,ZHOU Zhang-Kai,XIAO Si,SONG Hao,SU Xiong-Rui,LI Min,WANG Qu-Quan.Intensity-Dependent Optical Nonlinear Absorption and Refraction of Gold Nanorods[J].Chinese Physics Letters,2007,24(12):3443-3446. |
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| Authors: | GONG Hong-Mei ZHOU Zhang-Kai XIAO Si SONG Hao SU Xiong-Rui LI Min WANG Qu-Quan |
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| Institution: | Department of Physics, Wuhan University, Wuhan 430072Key Laboratory of Acoustic and Optic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072 |
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| Abstract: | Au nanorods dispersed in aqueous solution were prepared with the electrochemical method. The absorption spectrum shows two absorption peaks corresponding to the perpendicular and transverse surface plasma resonance absorption of the nanorods. The third-order optical nonlinear properties are investigated by Z-scans. The signs of the nonlinear absorption coemcient and refractive index are reversed as the intensity of incident laser increases, which is due to the shape change of the gold nanoparticles melted by the intense laser pulses. |
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| Keywords: | 42 70 Mp 42 65 K 82 45 Yz |
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