Three-dimensional Dammann vortex array with tunable topological charge.
Three-dimensional Dammann vortex array with tunable topological charge.
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DOI：
10.1364/ao.51.002485
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发表时间：
2012-05
期刊：
影响因子：
1.9
通讯作者：
Junjie Yu;Changhe Zhou;Wei Jia;Anduo Hu;Wugang Cao;Jun Wu;Shaoqing Wang
中科院分区：
文献类型：
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作者：
Junjie Yu;Changhe Zhou;Wei Jia;Anduo Hu;Wugang Cao;Jun Wu;Shaoqing Wang
我们描述了一种具有可调拓扑电荷的真3D聚焦涡旋阵列，称为3D Dammann涡旋阵列。该3D达曼涡旋阵列被布置成聚焦物镜焦区中的真3D晶格的结构，并且这些聚焦的涡旋位于3D晶格的每个节点上。提出了一种基于达曼涡旋光栅(DVG)和反射镜的方案，为改变三维达曼涡旋阵列的拓扑电荷提供了选择。作为实验演示，将1×7的DVG、1×5的Dammann波带片和5×5的Dammann光栅组合在一起，实现了5×5×5的Dammann涡旋阵列。通过移动和旋转反射镜，选择1×7DVG的不同衍射级作为入射光束，可以调谐这种达曼涡旋阵列的拓扑电荷(间隔为+1，从-2到+2)。由于这些吸引人的特性，这种三维Dammann涡旋阵列在三维同时光学操纵、三维平行涡旋扫描显微镜以及平行涡旋信息传输等领域具有潜在的应用前景。
We describe a kind of true 3D array of focused vortices with tunable topological charge, called the 3D Dammann vortex array. This 3D Dammann vortex array is arranged into the structure of a true 3D lattice in the focal region of a focusing objective, and these focused vortices are located at each node of the 3D lattice. A scheme based on a Dammann vortex grating (DVG) and a mirror is proposed to provide a choice for changing the topological charge of the 3D Dammann vortex array. For experimental demonstration, a 5×5×5 Dammann vortex array is implemented by combining a 1×7 DVG, a 1×5 Dammann zone plate, and another 5×5 Dammann grating. The topological charge of this Dammann vortex array can be tuned (from -2 to +2 with an interval of +1) by moving and rotating the mirror to select different diffraction orders of the 1×7 DVG as the incident beam. Because of these attractive properties, this 3D Dammann vortex array should be of high interest for its potential applications in various areas, such as 3D simultaneous optical manipulation, 3D parallel vortex scanning microscope, and also parallel vortex information transmission.