任意拓扑荷光学旋涡的产生及应用  

Generation and application of optical vortices with arbitrary topological charges

作　　者：步敬[1,2] 张莉超[3] 豆秀婕 杨勇[2] 张聿全 闵长俊[3] 

机构地区：[1]深圳大学数学与统计学院,广东深圳518060 [2]南开大学现代光学研究所光电信息技术科学教育部重点实验室,天津300071 [3]深圳大学纳米光子学研究中心,广东深圳518060

出　　处：《红外与激光工程》2017年第6期8-12,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(61427819;61377052;61605117);广东省自然科学基金(2016A030310063);深圳大学青年教师科研启动项目;南开大学光学信息技术科学教育部重点实验室开放课题

摘　　要：光学旋涡在很多领域开展了广泛的研究和应用。介绍了一种基于涡旋波片的光学旋涡产出方法,并通过波片组合的方法可以产生任意拓扑荷的光学旋涡,该方法具有很好的灵活性。同时由于波片的透过率非常高,实验中拓扑荷为3的光学旋涡的产生效率高达93%以上。通过干涉产生的叉形光栅叉数和方向进一步检测了产生光学旋涡的拓扑荷。利用产生的光学旋涡还进行了初步的光学操控实验,验证了轨道角动量对于微颗粒的动态操控作用。该方法将在更多领域得到推广和应用。Optical vortex （OV） has been researched and applied in various front flelds. Here, a novel method, by combining vortex retarders and half waveplates, was proposed to generate OVs with arbitrary topological charges. As the optical transmissivity of the waveplates were high, the energy efficiency of OV with topological charge of 3 was still higher than 93% in experiments. Further, the interference method was employed to detect topological charges of the generated OVs, by the direction and number of forks in the fork like pattern. As last, surface plasmon polariton （SPP） field was excited by highly focused OV with topological charge of 3, and gold particles were attracted and manipulated in the plasmonic vortex field. The results demonstrate significance of such method, and it will express enormous potential in various applications.

关 键 词：光学旋涡 拓扑荷 涡旋波片 轨道角动量 

分 类 号：TN249[电子电信—物理电子学]