Generation and application of the twisted beam with orbital angular momentum  

作　　者：高明伟 高春清 林志锋 

机构地区：[1]Department of Opto-Electronics Engineering, Beijing Institute of Technology,Beijing 100081

出　　处：《Chinese Optics Letters》2007年第2期89-92,共4页中国光学快报（英文版）

基　　金：This work was partly supported by the National Natural Science Foundation of China (No. 69908001);the Characterization of Optical Company and Laser BeamsⅡof Germany and the internatioual cooperation agreed by DFG and NSFC.

摘　　要：The twisted Laguerre-Gaussian beam was generated by transforming of Hermite-Gaussian beams through an optical system consisting of three rotated cylindrical lenses. The intensity distribution and phase structure of the twisted hollow beam were theoretically analyzed by using Collins diffraction integral. By utilizing the method of mode decomposition, the theory of transformation was analyzed. In the experiment, micro particles were trapped and rotated by this twisted beam.The twisted Laguerre-Gaussian beam was generated by transforming of Hermite-Gaussian beams through an optical system consisting of three rotated cylindrical lenses. The intensity distribution and phase structure of the twisted hollow beam were theoretically analyzed by using Collins diffraction integral. By utilizing the method of mode decomposition, the theory of transformation was analyzed. In the experiment, micro particles were trapped and rotated by this twisted beam.

关 键 词：Angular momentum Optical systems Phase structure 

分 类 号：TN29[电子电信—物理电子学]