| Linear and third-order nonlinear optical properties for the heptamethine cyanine chromophore H-aggregates thin film |
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| 作者姓名： | YUAN YiZhong KANG HaiFeng SUN ZhenRong WANG ZuGeng |
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| 作者单位： | [1]Key Laboratory of Optical and Magnetic Resonance Spectroscopy （East China Normal University）, Ministry of Education, and Department of Physics, East China Normal University, Shanghai 200062, China [2]School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant Nos.10234030 and 10574046）, National Key Project for Basic Research of China （No.1999075204）, Program for New Century Excellent Talents in University （NCET-04-0420）, the Doctoral Program of High Education （20050269011）, and Twilight Project sponsored by Shanghai Education Committee （No.03SG23）. |
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| 摘 要： | The thin film of a heptamethine cyanine chromophore HC was prepared by spin-coating technique. Its surface morphology and linear optical property were characterized by atomic force microscopy (AFM) and UV-visible absorption spectroscopy. The results show that HC molecules are arranged in a well-ordered H-aggregate type. The third-order nonlinear optical properties of the spin-coating film were also measured by degenerate four-wave mixing (DFWM) measurement. Enhanced third-order nonlinear susceptibility can be attributed to molecular aggregation effects, and the corresponding mechanism was dealt with by collective electronic oscillator (CEO) approach.
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| 关 键 词： | 薄膜 H-集合体 非线性光学 青色素 发色团 |
| 收稿时间： | 27 November 2006 |
| 修稿时间： | 2006-11-272007-02-05 |
Linear and third-order nonlinear optical properties for the heptamethine cyanine chromophore <Emphasis Type="Italic">H</Emphasis>-aggregates thin film |
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| YUAN YiZhong KANG HaiFeng SUN ZhenRong WANG ZuGeng.Linear and third-order nonlinear optical properties for the heptamethine cyanine chromophore H-aggregates thin film[J].Chinese Science Bulletin,2007,52(14):1897-1901. |
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| Authors: | Yuan YiZhong Kang HaiFeng Sun ZhenRong Wang ZuGeng |
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| Institution: | (1) Key Laborator of Optical and Magnetic Resonance Spectroscopy (East China Normal University), Ministry of Education, China;(2) Department of Physics, East China Normal University, Shanghai, 200062, China;(3) School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China |
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| Abstract: | The thin film of a heptamethine cyanine chromophore HC was prepared by spin-coating technique. Its surface morphology and linear optical property were characterized by atomic force microscopy (AFM) and UV-visible absorption spectroscopy. The results show that HC molecules are arranged in a well-ordered H-aggregate type. The third-order nonlinear optical properties of the spin-coating film were also measured by degenerate four-wave mixing (DFWM) measurement. Enhanced third-order nonlinear susceptibility can be attributed to molecular aggregation effects, and the corresponding mechanism was dealt with by collective electronic oscillator (CEO) approach. |
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| Keywords: | spin-coated thin film H-aggregates third-order nonlinear optics |
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