Author/Authors :
Zhang، نويسنده , , Tieqiao and Wang، نويسنده , , Feng and Yang، نويسنده , , Hong Ying Gong، نويسنده , , Qihuang and An، نويسنده , , Xin and Chen، نويسنده , , Huiying and Qiang، نويسنده , , Di، نويسنده ,
Abstract :
We have measured the second-order hyperpolarizability γ for C70 and its poly-aminonitrile derivative by using the femtosecond optical Kerr effect at 810 nm. The result showed that C70 exhibited a low optical nonlinearity. For the derivative C70–poly-aminonitrile a magnitude as high as 1.6×10−32 esu was measured for the second-order hyperpolarizability. The origin of this extreme enhancement of the nonlinearity of fullerene was assigned to the formation of a charge-transfer complex.
