Vortex array laser beam generation from a Dove prism-embedded unbalanced Mach-Zehnder interferometer.
Vortex array laser beam generation from a Dove prism-embedded unbalanced Mach-Zehnder interferometer.
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DOI：
10.1364/oe.16.019934
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发表时间：
2008-11
期刊：
影响因子：
3.8
通讯作者：
S. Chu;Chao Yang;K. Otsuka
中科院分区：
文献类型：
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作者：
S. Chu;Chao Yang;K. Otsuka
本文提出了一种用激光产生涡旋激光束的新方案。该系统由嵌入在非平衡马赫-曾德干涉仪结构中的多芬棱镜组成。这种配置允许从ince -高斯模式，IG(e) （p,p）模式控制地构建p × p涡阵列光束。采用离轴抽运机构的端泵浦固体激光系统可以很容易地产生不同阶数的入射IG(e)（p,p）激光束。本文模拟了这类涡旋阵列激光束的产生，解析导出了产生的涡旋阵列激光束的涡旋位置，并讨论了光束的传播效应。由此产生的涡旋阵列激光束可以以二维阵列的形式应用于光镊和原子陷阱，或者用于研究角动量向微观粒子或原子（玻色-爱因斯坦凝聚）的转移。
This paper proposes a new scheme for generating vortex laser beams from a laser. The proposed system consists of a Dove prism embedded in an unbalanced Mach-Zehnder interferometer configuration. This configuration allows controlled construction of p x p vortex array beams from Ince-Gaussian modes, IG(e) (p,p) modes. An incident IG(e)(p,p) laser beam of variety order p can easily be generated from an end-pumped solid-state laser system with an off-axis pumping mechanism. This study simulates this type of vortex array laser beam generation, analytically derives the vortex positions of the resulting vortex array laser beams, and discusses beam propagation effects. The resulting vortex array laser beam can be applied to optical tweezers and atom traps in the form of two-dimensional arrays, or used to study the transfer of angular momentum to micro particles or atoms (Bose-Einstein condensate).