Abnormal anti-Stokes Raman emission as single beam coherent anti-Stokes Raman scattering like process in LiNbO(3) and CdS powder

作者：Baibarac Mihaela; Baltog Ioan^*; Lefrant Serge

来源：Journal of Applied Physics, 2011, 110(5): 053106.

DOI：10.1063/1.3633936

Abnormal anti-Stokes Raman emission (AASRE) is defined by an anti-Stokes/Stokes intensity ratio much greater than expected on the basis of the equilibrium population of excited vibration states provided by the Boltzmann law. Using nonlinear optical materials such as LiNbO(3) and CdS in powder form, we demonstrate that under continuous single beam excitation it presents AASRE whose properties are similar to a single beam pumped Coherent Anti-Stokes Raman Scattering. We explain AASRE as resulting from a wave-mixing mechanism of the incident laser light with a Stokes shifted Raman light produced by a spontaneous Raman light scattering process, both strongly scattered inside the sample.

• 出版日期2011-9-1