Polarization Detection Using Light's Orbital Angular Momentum,Advanced Optical Materials

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Polarization Detection Using Light's Orbital Angular Momentum
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-06-15 , DOI: 10.1002/adom.202000484
Aning Ma _{1,

2} , Yuttana Intaravanne ₁ , Jin Han _{1,

3} , Ruoxing Wang _{1,

4} , Xianzhong Chen ₁

Affiliation

Polarization detection has been used for a wide variety of applications. A twisted light beam with a helical phase structure carries an orbital angular momentum. The rapid development of optical metasurfaces has enabled practical generation and manipulation of twisted light beams at subwavelength resolution. Herein, a facile metasurface approach is experimentally demonstrated to directly detect the polarization state of light based on the superposition of twisted light beams. The major axis and ellipticity of the polarized light are measured by the interference pattern of two twisted light beams with same topological charges and opposite signs, while the handedness is determined by using topological charges with different values. The subwavelength resolution, ultrathin nature, and compactness render this technology very attractive for diverse applications including optical communications, optical tweezers, and quantum sciences.

中文翻译：

使用光的轨道角动量进行偏振检测

偏振检测已被用于多种应用。具有螺旋相位结构的扭曲光束承载轨道角动量。光学超表面的迅速发展使得能够以亚波长分辨率实际产生和操纵扭曲光束。在这里，实验证明了一种简便的超表面方法，可以基于扭曲光束的叠加直接检测光的偏振态。偏振光的长轴和椭圆率通过具有相同拓扑电荷和相反符号的两条扭曲光束的干涉图来测量，而通过使用具有不同值的拓扑电荷来确定旋向性。亚波长分辨率，超薄本性，

更新日期：2020-06-15

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