| Large Enhancement of Optical Nonlinearities of New Organophosphorus Fullerene Derivative |
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| 作者姓名： | 刘智波 田建国 臧维平 周文远 张春平 郑建禺 周迎春 徐华 |
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| 作者单位： | [1]PhotonicsCenter,CollegeofPhysics,NankaiUniversity,Tianjin300071 [2]Collegeorchemistry,NankaiUniversity,Tianjin300071 |
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| 摘 要： | Optical nonlinearities of new organophosphorus fullerene derivative were determined by the Z-scan method with a pulsed Q-switch Nd:YAG laser at 532nm. The experimental results demonstrated that the derivative has much larger excited-states nonlinear absorption and nonlinear refraction than C60. A five-level model was utilized to fit the experimental data, and a good agreement is reached. Some parameters such as excited-state absorption cross and refraction cross were obtained. To our knowledge, the excited-state cross section of new organophosphorus fullerene derivative and its effective ratio to the ground-state cross section are the largest values among the fullerene derivatives reported to date.
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| 关 键 词： | 调QNd：YAG激光器 非线性光学 fullerene 有机磷衍生物 Z扫描 实验研究 五阶模型 |
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