| Enhanced Nonlinear Absorption and Optical Limiting Properties of Organic Material ZnTBP—CA—PhR in a DA—ET System |
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| 引用本文： | 于世瑞,赵有源,李潞瑛.Enhanced Nonlinear Absorption and Optical Limiting Properties of Organic Material ZnTBP—CA—PhR in a DA—ET System[J].中国物理快报,2003,20(7):1070-1073. |
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| 作者姓名： | 于世瑞 赵有源 李潞瑛 |
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| 作者单位： | DepartmentofOpticalScienceandEngineering,StateKeylaboratoryofAdvancedPhotonicMaterialsandDevices,FudanUniversity,Shanghai200433 |
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| 摘 要： | Nonlinear absorption of the organic material Zn-tetrabenzoporphin-cronicacid-phenonxy resin(ZnTBP-CA-PhR) in the donor-acceptor energy-transfer(DA-ET) system is investigated by the irradiation of Ar^ laser on its solid film.A reverse saturable absorption and an enhanced second reverse saturable absorption called the rereverse saturable absorption are observed in a visible wavelength range.The high performance of optical limiting of the sample possessing low input threshold and an over 95% linear transmission ratio are observed.The physical mechanism of rereverse satruable absorption is analysed by a five-level rate-equation simulating.According to the Huygens wave diffraction principle and the combination of Kerr effect,thermo-optic effect and optical absorption variation,a mathematical model for the optical limiting of ZnTBP-CA-PhR film limiter is established and the theoretical simulating gives a good agreement with the experimental results.
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| 关 键 词： | 有机材料 DA－ET系统 能量变换 非线性光学性质 非线性吸收 光限制性质 ZnTBP－CA－PhR 锌 |
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