Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures

The photonic spin Hall effect (PSHE) plays an important role in both fundamental science and precision metrology. In this paper, we theoretically propose a polarization-dependent bound state in the continuum (BIC) in a compound grating waveguide structure based on the selectable guided resonance at...

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Main Authors: Wu, Feng, Liu, Tingting, Long, Yang, Xiao, Shuyuan, Chen, Gengyan
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/169906
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1699062023-08-14T15:34:48Z Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures Wu, Feng Liu, Tingting Long, Yang Xiao, Shuyuan Chen, Gengyan School of Physical and Mathematical Sciences Science::Physics Grating Waveguide Structures Guided Resonances The photonic spin Hall effect (PSHE) plays an important role in both fundamental science and precision metrology. In this paper, we theoretically propose a polarization-dependent bound state in the continuum (BIC) in a compound grating waveguide structure based on the selectable guided resonance at near-infrared wavelengths. Empowered by the unique resonant property and polarization-dependent property of the quasi-BIC, the transverse shift of the PSHE can be intensively enhanced to the order of hundreds of micrometers. Besides, the enhancement of the transverse shift of the PSHE is robust against the geometric parameters. Our work not only provides an all-dielectric platform to achieve giant PSHE, but also offers a viable approach to design high-performance PSHE-based optical devices. Published version This work is sponsored by the National Natural Science Foundation of China (Grants No. 12104105, No. 12264028, No. 11947065, and No. 61901164), the Science and Technology Program of Guangzhou (Grant No. 202201011176), the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2023A1515011024), the Special Projects in Key Fields of Universities in Guangdong Province (Grant No. 2020ZDZX3048), the Natural Science Foundation of Jiangxi Province (Grant No. 20202BAB211007), the China Scholarship Council (Grant No. 202008420045), the Start-up Funding of Guangdong Polytechnic Normal University (Grant No. 2021SDKYA033), and the Interdisciplinary Innovation Fund of Nanchang University (Grant No. 2019-9166-27060003). 2023-08-14T06:12:26Z 2023-08-14T06:12:26Z 2023 Journal Article Wu, F., Liu, T., Long, Y., Xiao, S. & Chen, G. (2023). Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures. Physical Review B, 107(16), 165428-1-165428-11. https://dx.doi.org/10.1103/PhysRevB.107.165428 1098-0121 https://hdl.handle.net/10356/169906 10.1103/PhysRevB.107.165428 2-s2.0-85158820714 16 107 165428-1 165428-11 en Physical Review B © 2023 American Physical Society. All rights reserved. This paper was published in Physical Review B and is made available with permission of American Physical Society. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Grating Waveguide Structures
Guided Resonances
spellingShingle Science::Physics
Grating Waveguide Structures
Guided Resonances
Wu, Feng
Liu, Tingting
Long, Yang
Xiao, Shuyuan
Chen, Gengyan
Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
description The photonic spin Hall effect (PSHE) plays an important role in both fundamental science and precision metrology. In this paper, we theoretically propose a polarization-dependent bound state in the continuum (BIC) in a compound grating waveguide structure based on the selectable guided resonance at near-infrared wavelengths. Empowered by the unique resonant property and polarization-dependent property of the quasi-BIC, the transverse shift of the PSHE can be intensively enhanced to the order of hundreds of micrometers. Besides, the enhancement of the transverse shift of the PSHE is robust against the geometric parameters. Our work not only provides an all-dielectric platform to achieve giant PSHE, but also offers a viable approach to design high-performance PSHE-based optical devices.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Wu, Feng
Liu, Tingting
Long, Yang
Xiao, Shuyuan
Chen, Gengyan
format Article
author Wu, Feng
Liu, Tingting
Long, Yang
Xiao, Shuyuan
Chen, Gengyan
author_sort Wu, Feng
title Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
title_short Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
title_full Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
title_fullStr Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
title_full_unstemmed Giant photonic spin Hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
title_sort giant photonic spin hall effect empowered by polarization-dependent quasibound states in the continuum in compound grating waveguide structures
publishDate 2023
url https://hdl.handle.net/10356/169906
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