Novelty Filtering Using Phase Conjugate Wave in Organic Dye-Doped Polymer Films

Abstract

A real-time detection of a moving object was demonstrated by taking the subtraction between cross-polarized phase conjugate waves with fast and slow response times with two kinds of dye-doped phase conjugators. One consists of superposed films of an erythrosin-B-doped film and a methyl-orange-doped film, and the other is a film dispersed with both dyes. The relative phase between cross-polarized phase conjugate waves by the both dye-dispersed films was stable.

Polarization dependence of phase-conjugate reflectivities in solid films containing randomly oriented saturable dyes

“…The nonlinear polarization induced in such dye-doped films depends not only on the light intensity but also on the polarization state of incident light beams because of the optical anisotropy of each dye molecule, so that the PC wave can be generated even in the case of a probe wave orthogonally polarized to that of parallel linearly polarized pump waves. Since applications using this polarization dependence of the PC wave have also been demonstrated for image processing [6], [7], it is necessary to take account of the influences of polarization states on the PC reflectivity, which requires an orientational average over the dipole moment induced in each dye molecule to be performed [8]. The analysis of polarization-dependent PC reflectivity has been carried out on the basis of a threeenergy-level model for saturable dyes [9], [10].…”