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Proceedings Paper

Self-action of light beams in electrically biased optical waveguides in lithium niobate
Author(s): V. Shandarov; E. Smirnov
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Paper Abstract

We experimentally investigate some features of the self-defocusing of light beams as well as the relaxation of waveguide channels induced by dark spatial solitons at wavelength of 632.8 nm within slab optical waveguides formed in lithium niobate by iron diffusion or combined diffusion of titanium, iron and copper. We also study an influence of the externally applied electric field on both, spatial self-action of single beam within such waveguides and external focused beam which propagates in direction normal to the waveguide surface. Experiments show that for lowest TE modes the photovoltaic nonlinearity results in the fast but not very strong beam defocusing and for modes of higher order this effect is slower but much stronger. It is also demonstrated that at suitable light intensity the screening of the external electric field significantly contributes to the beam self-action at its initial stage even for mediate value of applied electric field.

Paper Details

Date Published: 6 December 2006
PDF: 6 pages
Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230V (6 December 2006); doi: 10.1117/12.648219
Show Author Affiliations
V. Shandarov, Tomsk State Univ. of Control Systems and Radioelectronics (Russia)
E. Smirnov, Tomsk State Univ. of Control Systems and Radioelectronics (Russia)


Published in SPIE Proceedings Vol. 6023:
Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals
Gertruda V. Klimusheva; Andrey Iljin; Sergey Al. Kostyukevych, Editor(s)

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