ORGANIC NONLINEAR OPTICAL MATERIAL

摘要

PURPOSE:To obtain an org. nonlinear optical material having high harmonic generating capacity by providing the structure of a 5-membered benzohetero ring obtd. by condensing a 5-membered ring contg. a specified hetero atom with a benzene ring having an electron attractive substituent bonded to the ring. CONSTITUTION:The structure of a 5-membered benzohetero ring obtd. by condensing a 5-membered ring contg. at least one hetero atom selected among N, O and S with a benzene ring having an electron withdrawing substituent bonded to the ring is provided to a nonlinear optical material. The resulting nonlinear optical material has high second harmonic generating (SHG) and third harmonic generating (THG) capacities and a significant nonlinear optical effect. A material having especially high SHG capacity and high phase matching capacity can be utilized as a material for a wavelength converting device or a parametric oscillator.