Enhanced third-order nonlinear optical properties of C60–silane compounds

Abstract

The nonlinear optical properties of C60[NH2–(CH2)3–Si(OC2H5)3]3 sol and gel were investigated by femtosecond optical Kerr gate technique at 820 nm. The nonresonant third-order optical susceptibilities were measured to be 1.4×10−13 and 1.6×10−13 esu for the C60[NH2–(CH2)3–Si(OC2H5)3]3 sol and gel, respectively, which are two orders larger than that of C60 molecule.