Abnormal anti-Stokes Raman scattering and coherent backscattering as manifestation of Anderson localization of light in nonlinear mesoscopic materials

作者：Smaranda Ion; Mihut Lucian; Baibarac Mihaela; Baltog Ioan^*; Lefrant Serge

来源：Optical Engineering, 2014, 53(9): 097109.

DOI：10.1117/1.OE.53.9.097109

• Raman
• backscattering
• coherent anti-Stokes Raman scattering
• mesoscopic materials
• nonlinear optical materials
• Anderson localization

We demonstrate that under continuous single-beam excitation, one can generate an abnormal antiStokes 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, chi((3)) not equal 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.

• 出版日期2014-9