【摘要】 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更多还原

【Abstract】 The nonlinear optical properties of a series of C 60 derivatives with different substituents are reported. The optical limiting properties were measured using the second harmonic of a Q switched Nd∶YAG at 532 nm, the third order optical nonlinearities of C 60 derivatives in solution were studied by nanosecond degenerate four wave mixing(DFWM) experiment. The values of the third order hyperpolarizabilities γ (3)  and the third order nonlinear optical susceptibilities χ (3)  of C 60 derivatives were obtained, respectively. Experimental results show that different substituents have different effects on the nonlinear optical properties of C 60 derivatives.更多还原