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Proceedings Paper

Propagation and interference of light beams in photorefractive planar waveguide LiNbO3:Ti:Fe
Author(s): Marina N. Frolova; Yuriy M. Larionov; Stanislav M. Shandarov; Vladymir M. Shandarov
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Paper Abstract

We study the effects of self-defocusing and nonlinear interference for light beams propagating in photorefractive LiNbO3:Ti:Fe waveguide. The wave equation in paraxial approximation for this case of a crystal with the photovoltaic type of nonlinearity is used. A numerical approach allows to study the interference processes for waveguide modes both of the same and different orders. It is found that the behavior of interference minimum in the case of two parallel beams with a phase shift of π between each other looks like a channel waveguide induced by a dark soliton. The intensity dependence of defocusing angle and the nonlinear interference in waveguide formed by sequential diffusion of titanium and iron in Z-cut of LiNbO3 have been experimentally investigated.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.527009
Show Author Affiliations
Marina N. Frolova, State Univ. of Control Systems and Radioelectronic (Russia)
Yuriy M. Larionov, State Univ. of Control Systems and Radioelectronic (Russia)
Stanislav M. Shandarov, State Univ. of Control Systems and Radioelectronic (Russia)
Vladymir M. Shandarov, State Univ. of Control Systems and Radioelectronic (Russia)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life

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