3-DIMENSIONAL DEGENERATE MULTIWAVE MIXING AND OPTICAL STORAGE EFFECTSIN C-60 LANGMUIR-BLODGETT-FILMS

We present here the generation of forward phase conjugate waves (FPCWs ) by means of degenerate multiwave mixing with; three-dimensional geom etry in CBD arachidic acid (C-60-AA) complex Langmuir-Blodgett films. The FPCWs are induced by third-and higher-order (5th-order) nonlinear effects of the films. The 3rd-order susceptibility gamma((3)), was mea sured to be 1.8 X 10(-8) esu for the film at 532 nm wavelength. In the meantime, optical storage effects in C-60-AA complex LB films were ob served. The origin of the effects is considered mainly due to the ligh t-induced transformation between the aggregate and monomer structure o f C-60 molecules.