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| Nonlinear optical properties of a self-organized dye thin film | |
| 作者单位： | 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，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 School of Materials Science and Engineering，East China University of Science and Technology，Shanghai 200237，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，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 |
| 摘 要： | A self-organized thin film of a cyanine dye is fabricated by the spin-coating technique and is characterized by ultraviolet-visible spectroscopy,infrared(IR)spectroscopy,small-angle X-ray diffraction,ellipsometer, and atomic force microscopy(AFM).The nonlinear optical properties of the thin films are investigated by degenerate four wave mixing(DFWM)technique.The cyanine dye thin film sample exhibits high optical nonlinearities(X~(3)=2.55×10~(-12)esu),and the mechanism is analyzed by the exciton coupling theory. |
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