Optical Metasurfaces for Generation and Superposition of Optical Ring Vortex Beams,Laser & Photonics Reviews

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Optical Metasurfaces for Generation and Superposition of Optical Ring Vortex Beams
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2020-08-05 , DOI: 10.1002/lpor.202000146
Jin Han _{1,

2} , Yuttana Intaravanne ₁ , Aning Ma _{1,

3} , Ruoxing Wang _{1,

4} , Songtao Li _{1,

5} , Zhancheng Li ₆ , Shuqi Chen ₆ , Jensen Li ₇ , Xianzhong Chen ₁

Affiliation

The helical phase structure of a twisted light beam has attracted big interest in both fundamental science and practical applications. A facile metasurface approach to generate and manipulate ring vortex beams is reported and experimentally demonstrated. The generation of ring vortex beams is realized by combining the functionalities of an axicon, a vortex beam generator and a beam deflector onto a single reflective metasurface, which consists of nanorods with spatially variant orientations sitting on a silicon dioxide layer in the middle and a gold layer at the bottom. By controlling the polarization state of the incident light, the superposition of ring vortex beams is continuously tuned. The unique property of the developed device renders this technology very attractive for polarization detection and quantum science related applications.

中文翻译：

用于光学环形涡旋光束产生和叠加的光学超表面

扭曲光束的螺旋相结构在基础科学和实际应用中都引起了极大的兴趣。报告和实验证明了一种生成和操纵环形涡旋光束的简便的超表面方法。环形涡旋光束的产生是通过将轴锥棱镜，涡旋光束发生器和光束偏转器的功能组合到单个反射超表面上来实现的，该反射超表面由位于空间中的二氧化硅层和金的纳米棒组成，这些纳米棒具有空间变化的取向底部的图层。通过控制入射光的偏振态，连续调谐环形涡旋光束的叠加。所开发设备的独特性能使该技术对于偏振检测和量子科学相关应用非常有吸引力。

更新日期：2020-09-10

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