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有机磷富勒烯衍生物光学非线性的溶剂影响研究

发表时间:2009-08-15  浏览量:1350  下载量:588
全部作者: 武睿,刘智波,张校亮,田建国
作者单位: 南开大学物理科学学院光子学中心
摘 要: 使用532 nm的纳秒脉冲激光,采用Z扫描方法对一种有机磷富勒烯衍生物在不同溶剂中的光学非线性及其光限制效应进行研究。实验结果表明:不同溶剂对有机磷富勒烯衍生物光学非线性的影响不同。其中,在本身具有较大光学非线性的CS2溶剂中,该富勒烯衍生物有着更强的反饱和吸收及光限制效应,但是其非线性折射明显减小。通过对样品光限制效应的研究,发现有机磷富勒烯衍生物是一种良好的光限制介质,溶剂是影响其光限制效应的一个重要因素。最后,通过五能级模型,对实验结果进行理论拟合,得出了各种溶液激发态的吸收截面以及折射截面。
关 键 词: 光学;反饱和吸收;非线性折射;光限制;Z扫描;有机富勒烯衍生物
Title: Study on solvent effect of optical nonlinearities of an organophosphorus fullerene derivative
Author: WU Rui, LIU Zhibo, ZHANG Xiaoliang, TIAN Jianguo
Organization: Photonic Center, Institute of Physics, Nankai University
Abstract: Optical nonlinearities and optical limiting of an organophosphorus fullerene derivative in four different solvents were determined by the Z�scan method by use of a nanosecond�pulse laser at 532 nm. Experimental results show that the effect of solvent plays an important role in optical nonlinearities of the organophosphorus fullerene derivative. In the solvent of CS2 which has large optical nonlinearity, the organophosphorus fullerene derivative presents larger reverse saturable absorption and stronger optical limiting than that in other solvents. However, nonlinear refraction of the fullerene derivative in CS2 decreases evidently. The paper studies the optical limiting of the sample, and the results show that the organophosphorus fullerene derivative is a good optical limiting medium, and the solvent is an important factor influencing the optical limiting. By use of a five�level model to fit the experimental data, some parameters are obtained, such as excited�state absorption and refraction cross sections.
Key words: optics; reverse saturable absorption; nonlinear refraction; optical limiting; Z�scan; organophosphorus fullerene derivative
发表期数: 2009年8月第15期
引用格式: 武睿,刘智波,张校亮,等. 有机磷富勒烯衍生物光学非线性的溶剂影响研究[J]. 中国科技论文在线精品论文,2009,2(15):1550-1556.
 
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