Controlled transverse spin generation with a vector field controlling metasurface

Pavel D. Terekhov; Md Tarek Rahman; Lidan Zhang; Yimin Ding; Shengyuan Chan; Xingwang Zhang; Xingjie Ni

doi:10.1117/12.2677799

4 October 2023 Controlled transverse spin generation with a vector field controlling metasurface

Pavel D. Terekhov, Md Tarek Rahman, Lidan Zhang, Yimin Ding, Shengyuan Chan, Xingwang Zhang, Xingjie Ni

Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC126461F (2023) https://doi.org/10.1117/12.2677799
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Transverse spin angular momentum (t-SAM) is a spin with a vector perpendicular to the light propagation direction, naturally appearing in tightly confined electromagnetic waves. For the first time, we successfully generated t-SAM in a spatial point of maximum intensity of focused light using an asymmetric metasurface. The designed metasurface provides complete phase and polarization control and allows for the manipulation of both electric and magnetic transverse spin distribution. The results were obtained through both theoretical and experimental methods, demonstrating the metasurface's ability to generate a strong transverse spin in a focal point ensuring non-zero net spin in the focal plane. This discovery has potential applications in optomechanics, quantum optics, nanometrology, and directional scattering.

Conference Presentation

Citation Download Citation

Pavel D. Terekhov, Md Tarek Rahman, Lidan Zhang, Yimin Ding, Shengyuan Chan, Xingwang Zhang, and Xingjie Ni "Controlled transverse spin generation with a vector field controlling metasurface", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC126461F (4 October 2023); https://doi.org/10.1117/12.2677799

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