Tunable optical forces exerted on a black phosphorus coated dielectric particle by a Gaussian beam

Yang Yang, Xing Jiang, Banxian Ruan, Xiaoyu Dai, and Yuanjiang Xiang

In this paper, we systematically investigate the optical forces exerted on a black phosphorus (BP) coated dielectric particle by a Gaussian beam. The optical forces of the BP coated particle could be modified effectively by tuning the characteristics of the BP layer, such as the carrier density, BP thickness, and the angular dependence of anisotropic conductivity. The resonant mechanism and whispering gallery mode of the BP coated particle are analyzed. Furthermore, the multi-polar surface plasmons of the BP coated dielectric particle excited by the Laguerre Gaussian beam in the infrared band are also investigated. These investigations provide rich potential applications in flexible optical manipulation and optoelectronic devices.

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