Four-wave-mixing measurements on metal organics

The macroscopic third order optical susceptibility, (chi) (3 ), of a series of metal free, nickel and copper containing salicyaldehyde based metal organic complexes was measured by degenerate four wave mixing at 532 nm. Insertion of the metal ion into the ligand greatly enhanced the magnitude of (gamma) , the microscopic second order molecular hyperpolarizability. Maximum (gamma) values of 2.6 X 10(superscript -29 esu were measured for the materials studied.