Author/Authors :
Li، نويسنده , , Jianliang and Wang، نويسنده , , Shufeng and Yang، نويسنده , , Hong Ying Gong، نويسنده , , Qihuang and An، نويسنده , , Xin and Chen، نويسنده , , Huiying and Qiang، نويسنده , , Di، نويسنده ,
Abstract :
The second-order hyperpolarizability γ of C60 and its derivative C60-poly-aminonitrile was measured using a femtosecond time-resolved optical Kerr effect. The results showed that the optical nonlinearity of C60 was too low to be detected and an up-limit value of 9.0×10−35 esu was offered for its γ. However, a large enhancement of the optical nonlinearity for C60-poly-aminonitrile was observed and the value of its γ was measured to be as large as 3.2×10−33 esu.
