Analysis of the radiation force of a Laguerre Gaussian vortex beam exerted on an uniaxial anisotropic sphere

作者：Qu, Tan; Wu, Zhen-Sen^*; Shang, Qing-Chao; Li, Zheng-Jun; Bai, Lu; Gong, Lei

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2015, 162: 103-113.

DOI：10.1016/j.jqsrt.2015.03.033

• Laguerre Gaussian beam
• Radiation force
• Anisotropic particle
• Spherical vector wave function

Based on the expansion of Hermite Gaussian (HG) beam in terms of spherical vector wave functions (SVWFs) utilizing Complex Source Point Method (CSPM) and the relation between HG beam and Laguerre Gaussian (LG) mode, we derived the expansion of LG vortex beam in terms of SVWFs. Using Generalized Lorenz Mie Theory (GLMT), the radiation force (RF) exerted on a uniaxial anisotropic sphere by a LG vortex beam with spiral phase distribution is calculated. The effects of the radial and azimuthal mode index of LG vortex beam, anisotropic permittivity tensor elements, and particle size on the dimensionless axial and transverse RF have been numerically analyzed in detail.

• 出版日期2015-9
• 单位西安工业大学; 西安电子科技大学