Abstract
We developed a semi-analytical and semi-classical theory for nonlinear scattering of coherent anti-Stokes Raman scattering (CARS) signal from a cylindrical microparticle by paraxial focused laser beams. We study the effects of radius and length of the microparticle, as well as the orientation on the angular distributions of the CARS signal. The waist of the laser beam is found to have a significant effect on the angular distribution. The combination of Gaussian laser beams and cylindrical geometry yields analytical expressions for the orientation factor and the CARS electric field, which permit convenient and efficient computation of the scattering signal versus various physical parameters.
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