Tomoaki TAKEDA, Masashi YAMADA, Kazuo NAKAGAWA and Hirofumi FUJIWARA

Department of Materials Science and Engineering, Muroran Institute of Technology, 27-1, Mizumoto, Muroran 050, Japan

(Accepted July 1, 1994)

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.

Key words : novelty filter, phase conjugation, organic dye, methyl-orange, erythrosin, dye-doped polyvinyl alcohol film