25 August 1994 Photorefractive effect in planar waveguides in cubic crystals
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Proceedings Volume 2212, Linear and Nonlinear Integrated Optics; (1994) https://doi.org/10.1117/12.185157
Event: Integrated Optoelectronics '94, 1994, Lindau, Germany
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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuri R. Salikaev, Yuri R. Salikaev, Stanislav M. Shandarov, Stanislav M. Shandarov, } "Photorefractive effect in planar waveguides in cubic crystals", Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); doi: 10.1117/12.185157; https://doi.org/10.1117/12.185157
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