OPTICAL 3RD-HARMONIC GENERATION OF POLY (2-BROMO-1,4-PHENYLENEVINYLENE)

Abstract

Weakly electron withdrawing bromine substituted poly (2-bromo-1,4-phenylenevinylene) (PBrPV) was synthesized through water-soluble precursor method. The linear and nonlinear optical properties of PBrPV were compared with those of poly (1,4-phenylenevinylene) (PPV). The third-order nonlinear optical susceptibility, chi(3), was measured by using third-harmonic generation (THG) technique at 1907 nm, fundamental wavelength. The calculated chi(3) values of PPV and PBrPV were 3X10(-12) esu and 2X10(-12) esu, respectively.