Ultracompact Metasurface for Simultaneous Detection of Polarization State and Orbital Angular Momentum

Author:

Zhang Yaxin1234,Jin Jinjin12,Pu Mingbo1235,Guo Yinghui1235,He Qiong12,Zhang Runze123,Zhang Fei125,Li Xiong123,Ma Xiaoliang123,Luo Xiangang123ORCID

Affiliation:

1. National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences Chengdu 610209 China

2. State Key Laboratory of Optical Technologies on Nano‐Fabrication and Micro‐Engineering, Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610209 China

3. School of Optoelectronics University of Chinese Academy of Sciences Beijing 100049 China

4. Xi'an Institute of Electromechanical Information Technology Xi'an 710065 China

5. Research center on vector optical fields Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610209 China

Abstract

AbstractIn 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.

Funder

National Key Research and Development Program of China

Sichuan Province Science and Technology Support Program

National Natural Science Foundation of China

China Postdoctoral Science Foundation

Publisher

Wiley

Subject

Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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