3RD-HARMONIC GENERATION OF POLYMERIC CHARGE-TRANSFER COMPLEX FILM

Nonlinear optical property of polymeric charge transfer complex was investigated in terms of the complex composition. The third-order nonlinear optical susceptibility chi(3)1111(-3omega,omega,omega,omega) of poly-n-vinylcarbazole complexed with 2,4,7-trinitrofluorenone or 2,3-dichloro-5,6-dicyano-1,4-benzoquinone was evaluated by means of the rotational Maker fringe of third-harmonic generation at the fundamental wavelength (omega) of 1.906 mum. The magnitude of chi(3) was 10(-12) esu order and was increased linearly with the content of charge-transfer complex in the film.