【摘要】 富勒烯是一种结构高度对称、物理性质非常稳定的碳团簇 ,但由于它在普通的溶剂中的溶解性较差 ,限制了它在光限幅方面的应用 为了克服这一缺点 ,人们合成了多种富勒烯衍生物 与此同时 ,纳米结构体系材料在光限幅方面所呈现出的良好性能也引起了人们的关注 为了进一步提高光限幅特性 ,人们在富勒烯衍生物的基础上又合成了基于富勒烯纳米结构体系材料 研究了几种基于富勒烯金属纳米合成物的光学非线性吸收特性 应用Z扫描技术 ,在 5 32nm波长 ,8ns脉宽激光下 ,首次测量了几种富勒烯金纳米合成物的非线性吸收特性 .实验结果表明 ,不同取代基影响非线性吸收 .更多还原

【Abstract】 Fullerene are structurally defined symmetric all carbon cluster, and have very stable physical nature. The discovery of good optical limiting properties in fullerene materials represents one of the most significant development in study of new optical limiters. The optical limiting capabilities of fullerene are limited by relatively low solubility in common solvents. In order to solve the problem, people have tried synthesizing fullerene derivatives. Meanwhile, more attention was attracted to the optical limiting of nanocomposites. To improve optical limiting, nanocomposites based on fullerene have been synthesized. In this paper, nonlinear absorption of nanocomposites based on fullerene have been investigated. For the first time, the optical nonlinear absorption of gold nanocomposites based on fullerene have been investigated by using Z-scan with 532 nm, 8 ns laser pulses. Strong absorption has been found, and the results of analysis show the nonlinear absorption arise from different substituent.更多还原