Toggling Near-Field Directionality via Polarization Control of Surface Waves

Yuhan Zhong; Xiao Lin; Jing Jiang; Yi Yang; Gui Geng Liu; Haoran Xue; Tony Low; Hongsheng Chen; Baile Zhang

doi:10.1002/lpor.202000388

Toggling Near-Field Directionality via Polarization Control of Surface Waves

Yuhan Zhong, Xiao Lin, Jing Jiang, Yi Yang, Gui Geng Liu, Haoran Xue, Tony Low, Hongsheng Chen, Baile Zhang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

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.

Original language	English (US)
Article number	2000388
Journal	Laser and Photonics Reviews
Volume	15
Issue number	4
DOIs	https://doi.org/10.1002/lpor.202000388
State	Published - Apr 2021

Bibliographical note

Funding Information:
Y.Z. and X.L. contributed equally to this work. The work was sponsored by 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 Research Funds for the Central Universities; and the Singapore Ministry of Education (grant nos. MOE2018-T2-1-022 (S) and MOE2016-T3-1-006).

Funding Information:
Y.Z. and X.L. contributed equally to this work. The work was sponsored by 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 Research Funds for the Central Universities; and the Singapore Ministry of Education (grant nos. MOE2018‐T2‐1‐022 (S) and MOE2016‐T3‐1‐006).

Publisher Copyright:
© 2021 Wiley-VCH GmbH

Keywords

graphene
metasurface
plasmonics
spin–orbit interaction of light

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10.1002/lpor.202000388

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title = "Toggling Near-Field Directionality via Polarization Control of Surface Waves",

abstract = "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.",

keywords = "graphene, metasurface, plasmonics, spin–orbit interaction of light",

author = "Yuhan Zhong and Xiao Lin and Jing Jiang and Yi Yang and Liu, {Gui Geng} and Haoran Xue and Tony Low and Hongsheng Chen and Baile Zhang",

note = "Funding Information: Y.Z. and X.L. contributed equally to this work. The work was sponsored by 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 Research Funds for the Central Universities; and the Singapore Ministry of Education (grant nos. MOE2018-T2-1-022 (S) and MOE2016-T3-1-006). Funding Information: Y.Z. and X.L. contributed equally to this work. The work was sponsored by 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 Research Funds for the Central Universities; and the Singapore Ministry of Education (grant nos. MOE2018‐T2‐1‐022 (S) and MOE2016‐T3‐1‐006). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",

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AU - Low, Tony

AU - Chen, Hongsheng

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N2 - 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.

AB - 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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Toggling Near-Field Directionality via Polarization Control of Surface Waves

Abstract

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Keywords

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