Experimental realization of scalar and vector perfect Laguerre–Gaussian beams
Experimental realization of scalar and vector perfect Laguerre–Gaussian beams
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DOI：
10.1063/5.0048741
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发表时间：
2021-07
影响因子：
4
通讯作者：
Xin Liu;Y. E. Monfared;Ruixuan Pan;P. Ma;Y. Cai;C. Liang
中科院分区：
文献类型：
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作者：
Xin Liu;Y. E. Monfared;Ruixuan Pan;P. Ma;Y. Cai;C. Liang
自Ostrovsky等人提出理想光学涡旋（optimal optical vortex，简称OVR）概念以来，OVR的产生一直是光学领域的一个重要研究方向。38，534（2013）]。在这封信中，我们提供了一个实验演示的细节，使用完美的拉盖尔-高斯光束通过相位空间光调制器。详细研究了理想光束的特性，包括半径、束宽和环厚度。我们验证了所提出的理想拉盖尔-高斯光束的涡旋性质，包括其拓扑荷值和符号。最后，除了标量光束外，我们还从理论和实验上提出了矢量理想拉盖尔-高斯光束，并对它们的理想特性进行了评价。导出的结果清楚地说明了这种光束的完美特性独立的偏振状态。这些发现在光镊、光学成像和高容量光通信等领域有着重要的应用价值。
The generation of a perfect optical vortex (POV) has been an important area of research since the concept was introduced by Ostrovsky et al. [Opt. Lett. 38, 534 (2013)]. In this Letter, we provide the details of the experimental demonstration of a POV using perfect Laguerre–Gaussian beams via a phase-only spatial light modulator. The perfect beam properties, including radius, beam width, and ring thickness, are investigated in detail. We verify the vortex nature of the proposed perfect Laguerre–Gaussian beams including their topological charge value and sign. Finally, in addition to the scalar beams, we propose the vector perfect Laguerre–Gaussian beams both theoretically and experimentally and evaluate their perfect characteristics. The derived results clearly illustrate the perfect characteristics of such beams independent of the polarization state. The findings reported here can find significant applications in various fields including optical tweezers, optical imaging, and high capacity optical communications.