Toggling near-field directionality via polarization control of surface waves
Directional excitation of guidance modes is central to many applications ranging from light harvesting, optical information processing to quantum optical technology. Of paramount interest, especially, the active control of near-field directionality provides a new paradigm for the real-time on-chip m...
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sg-ntu-dr.10356-1601882022-08-31T03:23:47Z Toggling near-field directionality via polarization control of surface waves Zhong, Yuhan Lin, Xiao Jiang, Jing Yang, Yi Liu, Gui-Geng Xue, Haoran Low, Tony Chen, Hongsheng Zhang, Baile School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Science::Physics Graphene Metasurface Directional excitation of guidance modes is central to many applications ranging from light harvesting, optical information processing to quantum optical technology. Of paramount interest, especially, the active control of near-field directionality provides a new paradigm for the real-time on-chip manipulation of light. Here, it is found that for a given dipolar source, its near-field directionality can be toggled efficiently via tailoring the polarization of surface waves that are excited, for example, via tuning the chemical potential of graphene in a graphene-metasurface waveguide. This finding enables a feasible scheme for the active near-field directionality. Counterintuitively, it is revealed that this scheme can transform a circular electric/magnetic dipole into a Huygens dipole in the near-field coupling. Moreover, for Janus dipoles, this scheme enables actively flipping their near-field coupling and non-coupling faces. Ministry of Education (MOE) The work was sponsoredby NSF/EFRI-1741660; the National Natural Science Foundation of China(NNSFC) under grants numbers 61625502, 11961141010, and 61975176;the Top-Notch Young Talents Program of China; the Fundamental Re-search Funds for the Central Universities; and the Singapore Ministry ofEducation (grant nos. MOE2018-T2-1-022 (S) and MOE2016-T3-1-006). 2022-07-14T06:48:14Z 2022-07-14T06:48:14Z 2021 Journal Article Zhong, Y., Lin, X., Jiang, J., Yang, Y., Liu, G., Xue, H., Low, T., Chen, H. & Zhang, B. (2021). Toggling near-field directionality via polarization control of surface waves. Laser and Photonics Reviews, 15(4), 2000388-. https://dx.doi.org/10.1002/lpor.202000388 1863-8880 https://hdl.handle.net/10356/160188 10.1002/lpor.202000388 2-s2.0-85101568228 4 15 2000388 en MOE2018-T2-1-022 (S) MOE2016-T3-1-006 Laser and Photonics Reviews 10.21979/N9/KHQZUA © 2021 Wiley-VCH GmbH. All rights reserved. |
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Science::Physics Graphene Metasurface Zhong, Yuhan Lin, Xiao Jiang, Jing Yang, Yi Liu, Gui-Geng Xue, Haoran Low, Tony Chen, Hongsheng Zhang, Baile Toggling near-field directionality via polarization control of surface waves |
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Directional excitation of guidance modes is central to many applications ranging from light harvesting, optical information processing to quantum optical technology. Of paramount interest, especially, the active control of near-field directionality provides a new paradigm for the real-time on-chip manipulation of light. Here, it is found that for a given dipolar source, its near-field directionality can be toggled efficiently via tailoring the polarization of surface waves that are excited, for example, via tuning the chemical potential of graphene in a graphene-metasurface waveguide. This finding enables a feasible scheme for the active near-field directionality. Counterintuitively, it is revealed that this scheme can transform a circular electric/magnetic dipole into a Huygens dipole in the near-field coupling. Moreover, for Janus dipoles, this scheme enables actively flipping their near-field coupling and non-coupling faces. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Zhong, Yuhan Lin, Xiao Jiang, Jing Yang, Yi Liu, Gui-Geng Xue, Haoran Low, Tony Chen, Hongsheng Zhang, Baile |
format |
Article |
author |
Zhong, Yuhan Lin, Xiao Jiang, Jing Yang, Yi Liu, Gui-Geng Xue, Haoran Low, Tony Chen, Hongsheng Zhang, Baile |
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Zhong, Yuhan |
title |
Toggling near-field directionality via polarization control of surface waves |
title_short |
Toggling near-field directionality via polarization control of surface waves |
title_full |
Toggling near-field directionality via polarization control of surface waves |
title_fullStr |
Toggling near-field directionality via polarization control of surface waves |
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Toggling near-field directionality via polarization control of surface waves |
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toggling near-field directionality via polarization control of surface waves |
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2022 |
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https://hdl.handle.net/10356/160188 |
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1743119566063534080 |