Paper
21 October 1998 Optical anisotropy in glass induced by intercoherent bichromatic radiation
M. K. Balakirev
Author Affiliations +
Proceedings Volume 3485, 11th International Vavilov Conference on Nonlinear Optics; (1998) https://doi.org/10.1117/12.328275
Event: Eleventh International Vavilov Conference on Nonlinear Optics, 1997, Novosibirsk, Russian Federation
Abstract
Original results on experimental investigation of properties of reversible long-living optical anisotropy (OA), induced by coherent radiation in glass, are reviewed. Simultaneous action of two mutually coherent light beams with different frequencies (omega) and 2(omega) on an oxide glass leads to accumulation of a long-living anisotropic modulation of the refraction index ((Delta) n-grating). A phenomenon of light self-diffraction under accumulation of the OA and persistent self-sustained diffraction during grating relaxation in the presence of fundamental beam was evidented. Illumination of (Delta) n-grating by external light source speeds up its relaxation. Monochromatic illumination by any beam, leads to photoelectric instability. That is, weak gratings are amplified while strong weaken. A gigantic reversible light attenuation in the (Delta) n-gratings is discovered. Interpretation of the phenomena is based on the phenomenological model of the coherent photogalvanic effect tending to inhomogeneous accumulation of volume charges and reverse influence of static electric field on beams propagation by electro-optical effects.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. K. Balakirev "Optical anisotropy in glass induced by intercoherent bichromatic radiation", Proc. SPIE 3485, 11th International Vavilov Conference on Nonlinear Optics, (21 October 1998); https://doi.org/10.1117/12.328275
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KEYWORDS
Diffraction

Diffraction gratings

Glasses

Anisotropy

Second-harmonic generation

Signal attenuation

Absorption

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