Optical Torque Exerted on a Rotator under Illumination of a Vortex Beam

作     者：LI Dong-Hua PU Ji-Xiong WANG Xi-Qing 李东华;蒲继雄;王喜庆

作者机构：College of Information Science&EngineeringHuaqiao UniversityXiamen 361021 College of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2012年第29卷第6期

页      面：145-148页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60977068 and 61178015 

主　　题：vortex momentum shaped 

摘      要：We investigate the torque on a specially shaped rotator produced by a vortex *** formulas for the torque along x,y and z directions axe derived,and numerical calculation is *** is found that for the specially shaped rotator,the torque brought by the Laguerre-Gauss (LG) vortex beam is dependent upon the angle of the facet for each part of the rotator,and the topological charge of the vortex *** is shown that torque is generated from both the light momentum and orbital angular momentum (OAM) of the incident vortex beam,indicating that we can control the rotation of the rotator by modulating the OAM of the incident light beam.