Photorefractive two-wave mixing characteristics for image amplification in diffusion-driven media

G. Charmaine Gilbreath; Anne E. Clement; S. N. Fugera; Gregory J. Mizell

doi:10.1117/12.43562

1 June 1991 Photorefractive two-wave mixing characteristics for image amplification in diffusion-driven media

G. Charmaine Gilbreath; Anne E. Clement; S. N. Fugera; Gregory J. Mizell

Author Affiliations +

Proceedings Volume 1409, Nonlinear Optics II; (1991) https://doi.org/10.1117/12.43562
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

Photorefractive two-wave mixing was examined in the context of optical image amplification for diffusion-driven crystals at three wavelengths. Gain, beam fanning, and energy distribution at the image plane were studied in poled doped samples of KNbO₃, BaTiO₃, and SBN. Response were characterized at 514.5 nm, 632 nm, and 823 nm. To study the response at 823 nm, a mode-stabilized laser diode was used. To achieve stable optical image amplification in a continuous wave regime, low light levels were required for BaTiO₃ at 514.5 nm. KNbO₃ was a viable coupler at 514.5 nm at milliwatt power levels. Data indicates that SBN is a suitable coupler in the green only at extremely low power levels (microwatts). All three crystals exhibited gains in the near-infrared

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G. Charmaine Gilbreath, G. Charmaine Gilbreath, Anne E. Clement, Anne E. Clement, S. N. Fugera, S. N. Fugera, Gregory J. Mizell, Gregory J. Mizell, } "Photorefractive two-wave mixing characteristics for image amplification in diffusion-driven media", Proc. SPIE 1409, Nonlinear Optics II, (1 June 1991); doi: 10.1117/12.43562; https://doi.org/10.1117/12.43562

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