Propagation and interference of light beams in photorefractive planar waveguide LiNbO<sub>3</sub>:Ti:Fe

Marina N. Frolova; Yuriy M. Larionov; Stanislav M. Shandarov; Vladymir M. Shandarov

doi:10.1117/12.527009

19 November 2003 Propagation and interference of light beams in photorefractive planar waveguide LiNbO₃:Ti:Fe

Marina N. Frolova, Yuriy M. Larionov, Stanislav M. Shandarov, Vladymir M. Shandarov

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.527009
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

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.

Citation Download Citation

Marina N. Frolova, Yuriy M. Larionov, Stanislav M. Shandarov, and Vladymir M. Shandarov "Propagation and interference of light beams in photorefractive planar waveguide LiNbO₃:Ti:Fe", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.527009

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