Resonant vectorial wave coupling in cubic photorefractive crystals

B. I. Sturman; A. I. Chernykh; V. P. Kamenov; E. Shamonina; K. H. Ringhofer

doi:10.1364/JOSAB.17.000985

Journal of the Optical Society of America B
Vol. 17,
Issue 6,
pp. 985-996
(2000)
•https://doi.org/10.1364/JOSAB.17.000985

Resonant vectorial wave coupling in cubic photorefractive crystals

B. I. Sturman, A. I. Chernykh, V. P. Kamenov, E. Shamonina, and K. H. Ringhofer

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B. I. Sturman, A. I. Chernykh, V. P. Kamenov, E. Shamonina, and K. H. Ringhofer, "Resonant vectorial wave coupling in cubic photorefractive crystals," J. Opt. Soc. Am. B 17, 985-996 (2000)

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Abstract

We present a theory of resonant photorefractive wave coupling in cubic photorefractive crystals that are in general optically active. This theory includes the resonance enhancement of the photorefractive response in a constant applied electric field, the influence of photoelasticity, and the spatial inhomogeneity of the light intensity. In a unified manner, it allows one to describe the polarization and energy properties of two-wave coupling for the optical configurations relevant to experiment. Applications of the theory are given to photorefractive crystals of the sillenite family.

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Parameters	BSO $(λ = 514 nm)$	BTO $(λ = 633 nm)$
Refractive index, $n_{0}$	2.6	2.58
Dielectric constant, ∊	56	47
Rotatory power, ρ	$38.6 \deg / mm ≃ 6.74 {cm}^{- 1}$	$6.5 \deg / mm ≃ 1.13 {cm}^{- 1}$
Electro-optic coefficient, $r_{41}$	4.51 pm/V	4.74 pm/V
Effective trap density, $N_{t}$	$10^{16} {cm}^{- 3}$	$4 \times 10^{16} {cm}^{- 3}$
Mobility–lifetime product, μτ	$6 \times 10^{- 7} {cm}^{2} / V$	$10^{- 7} {cm}^{2} / V$

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Journal of the Optical Society of America B