Real-time interferometry by optical phase conjugation in dye-doped film

Hirofumi Fujiwara

doi:10.1117/12.47071

1 September 1991 Real-time interferometry by optical phase conjugation in dye-doped film

Hirofumi Fujiwara

Proceedings Volume 1507, Holographic Optics III: Principles and Applications; (1991) https://doi.org/10.1117/12.47071
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

Dyes fixed in polymer matrices can generate a phase-conjugate (PC) wave through several different mechanisms such as saturable absorption, trans-cis photoisomerism and photochemical irreversible changes in absorption coefficient and/or refractive index. PC waves generated in dye-doped films have optical properties which are not found in photorefractive materials, and their proper use allows one to perform three types of real-time PC interferometry. Real-time PC interferometries for (1) detecting the phase difference between two objects. (2) subtraction in amplitude of two objects, and (3) detecting a moving object in a scene were demonstrated in a standard backward degenerate four-wave mixing (BDFWM) arrangement. An erythrosin-B- doped polyvinyl alcohol (PVA) film was used in (1) and (2), and a methyl- orange-doped PVA film was used in (3).

Citation Download Citation

Hirofumi Fujiwara "Real-time interferometry by optical phase conjugation in dye-doped film", Proc. SPIE 1507, Holographic Optics III: Principles and Applications, (1 September 1991); https://doi.org/10.1117/12.47071

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