Ultrafast third-order non-linear optical response of Diels–Alder adduct of fullerene C 60 with a metallophthalocyanine

Abstract

The third-order optical non-linearity of a Diels–Alder adduct of fullerene C 60 with a copper phthalocyanine was investigated using the femtosecond time-resolved optical Kerr gate method at 830 nm wavelength. Its non-resonant second-order hyperpolarizability was estimated to be 5.4×10 −31 esu. The non-linearity enhancement from the formation of the intramolecular charge-transfer complex is discussed.