| Large Third-Order Optical Nonlinearity and Fast Response of a Squarylium Dye |
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| 作者姓名： | 李忠玉 金朝辉 KASATANI Kazuo OKAMOTO Hiroaki |
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| 作者单位： | Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube, Yamaguchi 755-8611, Japan |
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| 基金项目： | Supported Partially by a Grant-in-Aid for Science Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan （No 15560033）. |
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| 摘 要： | The third-order optical nonlinearities and responses of a squarylium dye, 2,4-di-3-guaiazulenyl-1,3-dihydroxycyclobutenediylium dihydroxide, in tetrahydrofuran （THF） solution and in polystyrene （PS） coating films are measured by the femtosecond degenerate four-wave mixing technique under resonant conditions. The molecular hyperpolarizability γ of the squarylium dye in the THF solution is determined to be 3.0 × 10^-29 esu at 764 nm, and its electronic component γe is determined to be 1.1 × 10^-29 esu. The third-order nonlinear susceptibility X^（3） of one of the present PS coating films containing the squarylium dye is as high as 3.1 × 10^-8 esu at 80Ohm, and its electronic component Xe^（3） is 1.3 × 10^-8 esu.
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| 关 键 词： | 光学 非线形特性 快速响应 光谱 |
| 收稿时间： | 2005-05-14 |
| 修稿时间： | 2005-05-14 |
Large Third-Order Optical Nonlinearity and Fast Response of a Squarylium Dye |
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| Li ZhongYu;Jin ChaoHui;KASATANI;Kazuo;OKAMOTO;Hiroaki.Large Third-Order Optical Nonlinearity and Fast Response of a Squarylium Dye[J].Chinese Physics Letters,2005,22(9):2282-2285. |
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| Authors: | Li ZhongYu;Jin ChaoHui;KASATANI;Kazuo;OKAMOTO;Hiroaki |
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