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离轴涡旋光束干涉光场的理论研究
引用本文:朱艳英,陈志婷,刘承师,孟祥君,魏勇,郭西华,张磊,赵宝林.离轴涡旋光束干涉光场的理论研究[J].光电子.激光,2013(5):1012-1017.
作者姓名:朱艳英  陈志婷  刘承师  孟祥君  魏勇  郭西华  张磊  赵宝林
作者单位:燕山大学 理学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004;燕山大学 里仁学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004;燕山大学 理学院,河北 秦皇岛 066004
基金项目:国家自然科学基金(50875232)和秦皇岛市科学技术研究与发展计划(201101A071)资助项目  1 (1.燕山大学 理学院,河北 秦皇岛 066004; 2.燕山大学 里仁学院,河北 秦皇岛 066004)
摘    要:对普通拉盖尔-高斯涡旋光束和离轴拉盖尔-高 斯涡旋光束干涉光场进行了理论 模拟。对比分析表明,离轴涡旋干涉图样中光强分布不对称,拓扑荷取相同或者不同数值光 强 分布均向一个方向集中。拓扑荷取相同数值时,改变离轴参数d 使得干涉光强图样不对称现 象更加明显;拓扑荷取不同数值时,与普通涡旋光束干涉一样只影响光斑圆周展宽;且拓扑 荷 的正负决定光场集中分布的方向。当拓扑荷和离轴参数一定时,随着传输距离的增加观察面 上的光斑展宽也在相应增加。其结果将对长距离探测涡旋光束干涉的对准问题以及利用涡旋 光束捕获操纵微粒子起到指导性作用。

关 键 词:拉盖尔-高斯光束    离轴涡旋光束    干涉光场    拓扑荷    螺旋相位板
收稿时间:2012/10/27 0:00:00

Theoretical research of interference light field of off-axis vortex beam
ZHU Yan-ying,CHEN Zhi-ting,LIU Cheng-shi,MENG Xiang-jun,WEI Yong,GUO Xi-hu,ZHANG Lei and ZHAO Bao-lin.Theoretical research of interference light field of off-axis vortex beam[J].Journal of Optoelectronics·laser,2013(5):1012-1017.
Authors:ZHU Yan-ying  CHEN Zhi-ting  LIU Cheng-shi  MENG Xiang-jun  WEI Yong  GUO Xi-hu  ZHANG Lei and ZHAO Bao-lin
Affiliation:College of Science, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China;Co llege of Liren, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China;College of Science, Yanshan University, Qinhuangdao 066004,China
Abstract:Interference light fields of general Laguerre-Gaussian vortex beam and off-axis vortex Laguerre-Gaussian beam are simulated theoretically in this pa pe r.By comparing and analyzing the simulation parameters,it is shown that the li ght intensity distribution of interference pattern of off-axis vortex beam is a s ymmetric,and the light distributions with the same or different topological char ges are focused to one direction.With the same topological charge,the asymmetr ic phenomenon of light intensity distribution pattern is more obvious,as the of f-axis parameter d is changing.When the topological cha rges are different,to t he interference of general vortex beam,only the circumference spreading of the l ight spot is affected,and when off-axis vortex beams with different topologica l charges interfere,it is identical to general vortex beam interference,and th e positive or negative topological charge determines the direction of the light field concentration distribution.When the topological charge and off-axis param eter are fixed values,the width of light spot on the observation surface wil l increase accordingly with increasing the transmission distance.The simulation results show that this method is beneficial to the long distance observation of vortex beam interference alignment,and the analysis results are significant fo r trapping and manipulating micro-particles by using vortex beams.
Keywords:
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