Tuesday, June 27, 2017

Trapping Two Types of Particles Using a Laguerre–Gaussian Correlated Schell-Model Beam

Yuan Zhou; Hua-Feng Xu; Yangsheng Yuan; Ji Peng; Jun Qu; Wei Huang

Based on the Rayleigh scattering theory, the radiation forces and the trap stiffness on Rayleigh dielectric sphere induced by a focused Laguerre-Gaussian correlated Schell-model (LGCSM) beam are theoretically studied. It is found that by choosing the appropriate transverse coherence width, mode orders, transverse beam width, and focus lengths, a Rayleigh particle whose refractive index is larger or smaller than the ambient medium can be trapped. Our results will have some theoretical reference value for optical trapping.
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