Surface photorefractive wave on the boundary of a photorefractive crystal covered by metal

Boris A. Usievich; Djamil Kh. Nurligareev; Vladimir A. Sychugov; Lyudmila I. Ivleva; Pavel A. Lykov; Nikolay V. Bogodaev

doi:10.1117/12.922389

11 May 2012 Surface photorefractive wave on the boundary of a photorefractive crystal covered by metal

Boris A. Usievich, Djamil Kh. Nurligareev, Vladimir A. Sychugov, Lyudmila I. Ivleva, Pavel A. Lykov, Nikolay V. Bogodaev

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Proceedings Volume 8434, Nonlinear Optics and Applications VI; 84341O (2012) https://doi.org/10.1117/12.922389
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Special features of light-induced scattering of radiation (λ = 0.44 μm) with extraordinary polarisation in the SBN-75 photorefractive crystal are studied in detail and an efficient technique is proposed for exciting surface waves in this crystal. In the experiment carried out the efficiency of the surface wave excitation was ~ 30%, which is 50 times greater than that achieved earlier in exciting nonlinear surface waves in the optical region. The patterns of the near and far fields of the surface wave are presented. It is found that at small excitation angles (0-1.5°) the presence of a metal changes the character of arising surface waves. Using method of images for calculation of electrostatic fields a model is proposed explaining the peculiarities of light propagation close to the crystal-metal boundary.

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Boris A. Usievich, Djamil Kh. Nurligareev, Vladimir A. Sychugov, Lyudmila I. Ivleva, Pavel A. Lykov, and Nikolay V. Bogodaev "Surface photorefractive wave on the boundary of a photorefractive crystal covered by metal", Proc. SPIE 8434, Nonlinear Optics and Applications VI, 84341O (11 May 2012); https://doi.org/10.1117/12.922389

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KEYWORDS

Crystals

Nonlinear crystals

Laser crystals

Metals

Refractive index

Crystallography

Polarization

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