Hirofumi FUJIWARA, Tomoaki TAKEDA and Kazuo NAKAGAWA

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

(Accepted August 25, 1994)

Erythrosin B-doped polyvinyl alcohol (EB/PVA) film, a methyl-orange-doped polyvinyl alcohol (MO/PVA) film and a (EB+MO)/PVA film serve as not only phase conjugators but also hologram-recording media. A phase-conjugate (PC) wave is generated even when a probe wave is linear-polarized orthogonal to the pump polarization direction. Using these dye-doped films, we demonstrate optical PC processing for detecting the phase and amplitude difference between two objects and a moving or time-varying object in a backward degenerate four-wave mixing arrangement.

Key words : optical phase conjugation, phase-conjugate interferometry, novelty filtering, organic dye-doped films, erythrosin B, methyl-orange