Measurement on the third-order optical nonlinearity of C-70 and its poly-aminonitrile derivative by using the femtosecond optical Kerr effect

We have measured the second-order hyperpolarizability gamma for C-70 and its poly-aminonitrile derivative by using the femtosecond optical Kerr effect at 810 nm. The result showed that C-70 exhibited a low optical nonlinearity. For the derivative C-70-poly-aminonitrile a magnitude as high as 1.6 x 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. (C) 1999 Elsevier Science B.V. All rights reserved.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000078782300021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Chemistry, PhysicalPhysics, Atomic, Molecular & ChemicalSCI(E)22ARTICLE3-4343-34630