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Optical Engineering

Abnormal anti-Stokes Raman scattering and coherent backscattering as manifestation of Anderson localization of light in nonlinear mesoscopic materials
Author(s): Ion Smaranda; Lucian Mihut; Mihaela Baibarac; Ioan Baltog; Serge Lefrant
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Paper Abstract

We demonstrate that under continuous single-beam excitation, one can generate an abnormal anti-Stokes Raman emission (AASRE) whose properties are similar to a coherent anti-Stokes Raman scattering. The effect has been observed in mesoscopic materials, which possess intrinsically nonlinear properties [lithium niobate (LiNbO3), bismuth germanium oxide (Bi12GeO20; BGO), bismuth silicon oxide (Bi12GeO20; BSO)], which have a nonzero electric susceptibility of the third order, χ(3)≠0. Corroborated Raman and coherent backscattering studies demonstrate that the occurrence of both effects is conditioned by the existence of a mesoscopic morphology of the sample, which is able to ensure efficient transport of the light inside the sample through a multiple light scattering mechanism. In this context, both AASRE and coherent backscattering effects are because of the Anderson localization of the light.

Paper Details

Date Published: 19 September 2014
PDF: 7 pages
Opt. Eng. 53(9) 097109 doi: 10.1117/1.OE.53.9.097109
Published in: Optical Engineering Volume 53, Issue 9
Show Author Affiliations
Ion Smaranda, National Institute of Materials Physics (Romania)
Lucian Mihut, National Institute of Materials Physics (Romania)
Mihaela Baibarac, National Institute of Materials Physics (Romania)
Ioan Baltog, National Institute of Materials Physics (Romania)
Serge Lefrant, Univ. de Nantes (France)

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