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Proceedings Paper

Photorefractive effect in planar waveguides in cubic crystals
Author(s): Yuri R. Salikaev; Stanislav M. Shandarov
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Paper Abstract

Two-beam interaction of waveguide modes in planar waveguide in electro-optic crystal has been considered within the band-transport model, taking into account one photoactive level only. Equations for amplitudes of zero and first spatial harmonics of space-charge field potential have been obtained for interactions in the waveguide with short diffusion length and without of trap saturation. Consideration of a steady-state has been performed for small modulation index of interference light pattern and for case of the dark conductivity is a factor ore the photoconductivity is a factor. For the first case we obtain distributions of space-charge field components for different TE-TE and TM-TM interactions in the waveguide with an arbitrary large increment of refractive index. For the second case we obtain distributions of space-charge field components within waveguide layer only for TE0-TE0 and TM0-TM0 interactions only in waveguide with step-shaped profile of refractive index. At initial section of the recording the distributions of space-charge field components are the same in distribution at a steady-state for the case of the dark conductivity is a factor. The values of dimensionless overlap factors of space-charge field components with interference light pattern have been calculated for planar waveguide with large increment of refractive index.

Paper Details

Date Published: 25 August 1994
PDF: 11 pages
Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); doi: 10.1117/12.185157
Show Author Affiliations
Yuri R. Salikaev, State Academy of Automatic Control Systems and Radioelectronics (Russia)
Stanislav M. Shandarov, State Academy of Automatic Control Systems and Radioelectronics (Russia)


Published in SPIE Proceedings Vol. 2212:
Linear and Nonlinear Integrated Optics
Giancarlo C. Righini; David Yevick, Editor(s)

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