Investigation on optical limiting of an organometallic DMIT compound

An organometallic compound,[(C2H5)4N]2[Cu(dmit)2](dmit2-=4,5-dithiolate-1,3-dithiole-2-thione),abbreviated as EtCu,was synthesized.Its nonlinear optical properties dissolved in acetonitrile with concentration of 1.0×10-3 mol/L were studied using the open-aperture Z-scan technique with 18ns pulse width at 1053nm.The results suggest that the sample shows optical limiting effect which is attributed to reverse saturable absorption of the material.This material may be a promising candidate for the optical limiting application.