DEGENERATE 4-WAVE-MIXING IN AZO-DYE-DOPED POLYMER-FILMS uri icon

abstract

  • We report experimental results for the third-order nonlinear properties of thin polymer films doped with azo dyes, which have long-lived triplet states and can undergo reversible photochromic reactions. Cast films of Disperse Red 1 and Methyl Red in polystyrene and polymethyl methacrylate were investigated by degenerate four-wave mixing with alow-power cw mode-locked laser. Polarization properties and the time dependence of the laser-induced gratings were investigated, and results were compared with those obtained for liquid solutions of the dye in the respective monomers. Aphase-conjugate reflectivity of 1% was observed for Disperse Red 1 in polystyrene, with no long-term degradation under laser irradiation. 1991 Optical Society of America.

published proceedings

  • JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

author list (cited authors)

  • TOMOV, I. V., VANWONTERGHEM, B., DVORNIKOV, A. S., DUTTON, T. E., & RENTZEPIS, P. M.

citation count

  • 56

complete list of authors

  • TOMOV, IV||VANWONTERGHEM, B||DVORNIKOV, AS||DUTTON, TE||RENTZEPIS, PM

publication date

  • July 1991