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研究了加合不同取代基团的C60 醛类衍生物的光学非线性性质。利用简并四波混频 (DFWM)方法获得了C60 醛类各衍生物的三阶光学非线性超极化率γ( 3 ) 及相应的三阶光学非线性系数 χ( 3 ) 值。同时也研究了它们各自的光限幅特性。结果表明 :不同的取代基对C60 醛类衍生物三阶光学非线性及光限幅特性的影响不同
The optical nonlinear properties of C60 aldehyde derivatives with different substituent groups were studied. The third order optical nonlinear hyperpolarizability γ (3) and corresponding third order optical nonlinearity coefficient χ (3) were obtained by degenerate four wave mixing (DFWM) method. Their respective optical limiting properties are also studied. The results show that the effects of different substituents on the third-order optical nonlinearity and optical limiting properties of C60 aldehyde derivatives are different