Nonlinear optical responses of photorefractive crystals

Richard C. Powell; Huimin Liu; Istvan Foldvari; Scott A. Holmstrom; Roger J. Reeves

doi:10.1117/12.147056

17 June 1993 Nonlinear optical responses of photorefractive crystals

Richard C. Powell, Huimin Liu, Istvan Foldvari, Scott A. Holmstrom, Roger J. Reeves

Proceedings Volume 1861, Ultrafast Pulse Generation and Spectroscopy; (1993) https://doi.org/10.1117/12.147056
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

The nonlinear optical response of photorefractive oxide materials was investigated using four- wave-mixing (FWM) techniques with laser pulses having durations in the pico- and sub- picosecond range. The specific materials studied are KNbO₃, KTaO₃, KTa_1-XNb_XO₃ (KTN), Sr_XBa_1-XNb₂O₆, and Bi₂TeO₅. In each case there are several different physical processes that contribute to the nonlinear signals and their origins are analyzed in the context of time intervals within and after the cross-correlation time of the two write beams pulses. The role of the nonlinear absorption in the four-wave mixing (FWM) processes is compared for the different materials. Variation in the build-up of the electro-optic photorefractive effect is discussed.

Citation Download Citation

Richard C. Powell, Huimin Liu, Istvan Foldvari, Scott A. Holmstrom, and Roger J. Reeves "Nonlinear optical responses of photorefractive crystals", Proc. SPIE 1861, Ultrafast Pulse Generation and Spectroscopy, (17 June 1993); https://doi.org/10.1117/12.147056

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