Holographic photocurrent in photorefractive crystals

Natalia E. Noginova; Nickolai V. Kukhtarev; Bo Su Chen; H. John Caulfield; Putcha Venkateswarlu; Mikhail A. Noginov

doi:10.1117/12.239203

29 April 1996 Holographic photocurrent in photorefractive crystals

Natalia E. Noginova, Nickolai V. Kukhtarev, Bo Su Chen, H. John Caulfield, Putcha Venkateswarlu, Mikhail A. Noginov

Proceedings Volume 2795, Nonlinear Optics of Liquid and Photorefractive Crystals; (1996) https://doi.org/10.1117/12.239203
Event: Nonlinear Optics of Liquid and Photorefractive Crystals, 1995, Ai-Danil, Crimea, Ukraine

Abstract

A transient photo-electric current was investigated in photorefractive crystals of Sr_1-xBa_xNb₂O₆ (SBN) and Bi₁₂TiO₂₀ (BTO) as a response to a step-like modulation of the light grating phase. Different dependencies of the photocurrent relaxation time on the grating period were observed for SBN and BTO crystals. It is explained theoretically taking into consideration kinetics of the photoexcitation of carriers, charge transfer and trapping. A number of important parameters characterizing the crystals are estimated.

Citation Download Citation

Natalia E. Noginova, Nickolai V. Kukhtarev, Bo Su Chen, H. John Caulfield, Putcha Venkateswarlu, and Mikhail A. Noginov "Holographic photocurrent in photorefractive crystals", Proc. SPIE 2795, Nonlinear Optics of Liquid and Photorefractive Crystals, (29 April 1996); https://doi.org/10.1117/12.239203

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