Functional metasurface quarter-wave plates for simultaneous polarization conversion and beam steering

Yadong Deng; Cuo Wu; Chao Meng; Sergey I. Bozhevolnyi; Fei Ding

doi:10.1117/12.2618233

24 May 2022 Functional metasurface quarter-wave plates for simultaneous polarization conversion and beam steering

Yadong Deng, Cuo Wu, Chao Meng, Sergey I. Bozhevolnyi, Fei Ding

Proceedings Volume PC12130, Metamaterials XIII; PC121300J (2022) https://doi.org/10.1117/12.2618233
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

The capability to manipulate the polarization state of light at the nanoscale is of paramount importance in many emerging research areas ranging from optical communication to quantum information processing. Gap-surface plasmon (GSP) metasurfaces, which provide unprecedented advantages and abilities of molding reflected fields, have been demonstrated excellently suited for integration of multifunctional polarization optics into a single device. Here, we establish a versatile GSP metasurface platform based on nanoscale quarter-wave plates (nano-QWPs) that enable efficient circular-to-linear polarization conversion along with the complete phase control over reflected fields. Capitalizing on the nano-QWP design, we demonstrate, both theoretically and experimentally, how resonance and geometric phases can be used in concert to achieve independent and simultaneous phase modulation of both co- and cross-polarized circularly polarized (CP) waves by realizing arbitrary beam steering of co- and cross-polarized CP channels in a broadband near-infrared range. The GSP metasurface platform established in our work provides versatile and flexible solutions to enrich multiple functionalities for diversified metasurface-based polarization optics exploited in modern integrated photonic devices and systems.

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Citation Download Citation

Yadong Deng, Cuo Wu, Chao Meng, Sergey I. Bozhevolnyi, and Fei Ding "Functional metasurface quarter-wave plates for simultaneous polarization conversion and beam steering", Proc. SPIE PC12130, Metamaterials XIII, PC121300J (24 May 2022); https://doi.org/10.1117/12.2618233

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KEYWORDS

Polarization

Beam steering

Phase shift keying

Integrated photonics

Optical communications

Phase modulation

Plasmons

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