角动量
极化(电化学)
轨道角动量复用
物理
旋涡
光的轨道角动量
圆极化
光学
总角动量
光的角动量
方位量子数
斯托克斯参量
角动量耦合
量子力学
化学
物理化学
散射
微带线
作者
Yaxin Zhang,Jinjin Jin,Mingbo Pu,Yinghui Guo,Qiong He,Runze Zhang,Fei Zhang,Xiong Li,Xiaoliang Ma,Xiangang Luo
标识
DOI:10.1002/lpor.202301012
摘要
Abstract In the field of optical communications and quantum informatics, polarization and orbital angular momentum (OAM) offer a promising way to expand the dimension of information. However, detecting the polarization state and topological charge of the OAM beam on‐chip way can be challenging. To address this, an ultracompact metasurface is proposed and demonstrated. The metasurface is composed of six polarization‐sensitive metalenses that occupy 60°annular sectors each and are capable of simultaneous polarization state and orbital angular momentum detection. The metasurface focuses the coaxial polarized vortex beam into six locations, and the foci displacement is related to the value of the topological charge. The corresponding polarization state can be obtained through the reconstructed Stokes parameter using the six focus light intensities. For proof‐of‐concept, an ultracompact metasurface operating at a wavelength of 1064 nm is fabricated, which exhibits exceptional polarization and orbital angular momentum recognition ability. The proposed metasurface possesses the merits of ultra‐compact size and simultaneously entire polarization state and orbital angular momentum identification capability, which may encourage the development of on‐chip optical communication systems.
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