Investigation of photorefractive subharmonics in the absence of wavemixing

Sturman, B.I., McClelland, T.E., Webb, David J., Shamonina, E. and Ringhofer, K.H. (1995). Investigation of photorefractive subharmonics in the absence of wavemixing. Journal of the Optical Society of America B, 12 (9), pp. 1621-1627.

Abstract

Using a new optical configuration free from the influence of photorefractive optical nonlinearity, we investigate the main characteristics of the spatial subharmonic K/2 excited in a Bi12SiO20 crystal by a light-intensity pattern with wave vector K and frequency O. It is shown that in a large region of intensity and applied electric field the optimum value O of the frequency corresponds to the conditions of parametric excitation of the weakly damped eigenmodes of the medium: the space-charge waves. The threshold and above-threshold characteristics of the subharmonic regime are in good agreement with the theory.

Publication DOI: https://doi.org/10.1364/JOSAB.12.001621
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Additional Information: This paper was published in Journal of the Optical Society of America B - Optical Physics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-9-1621. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. © 1995 Optical Society of America.
Uncontrolled Keywords: optical configuration, photorefractive optical nonlinearity, spatial subharmonic K/2, Bi12SiO20 crystal, light-intensity pattern, wave vector K, frequency Ω, space-charge waves, subharmonic regime
Published Date: 1995-09-01
Authors: Sturman, B.I.
McClelland, T.E.
Webb, David J.
Shamonina, E.
Ringhofer, K.H.

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