Optical vortex lattice: an exploitation of orbital angular momentum

Nanophotonics

article

Liuhao Zhu¹  Miaomiao Tang¹  Hehe Li¹  Yuping Tai³  Xinzhong Li¹ 

[1] School of Physics and Engineering, Henan University of Science and Technology;State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS;School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology

关键词: micro-particle manipulation;    optical vortex;    orbital angular momentum;    physical optics;   

DOI  :  10.1515/nanoph-2021-0139

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Generally, an optical vortex lattice (OVL) is generated via the superposition of two specific vortex beams. Thus far, OVL has been successfully employed to trap atoms via the dark cores. The topological charge (TC) on each optical vortex (OV) in the lattice is only ±1. Consequently, the orbital angular momentum (OAM) on the lattice is ignored. To expand the potential applications, it is necessary to rediscover and exploit OAM. Here we propose a novel high-order OVL (HO-OVL) that combines the phase multiplication and the arbitrary mode-controllable techniques. TC on each OV in the lattice is up to 51, which generates sufficient OAM to manipulate microparticles. Thereafter, the entire lattice can be modulated to desirable arbitrary modes. Finally, yeast cells are trapped and rotated by the proposed HO-OVL. To the best of our knowledge, this is the first realization of the complex motion of microparticles via OVL. Thus, this work successfully exploits OAM on OVL, thereby revealing potential applications in particle manipulation and optical tweezers.

【 授权许可】

CC BY