Lee, K. Y., Yoon, S., Song, S. H. and Yoon, J. W. (2022) Topological beaming of light. Science Advances, 8(49), eadd8349. (doi: 10.1126/sciadv.add8349) (PMID:36490348) (PMCID:PMC9733916)
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Abstract
Nanophotonic light emitters are key components in numerous application areas because of their compactness and versatility. Here, we propose a topological beam emitter structure that takes advantage of submicrometer footprint size, small divergence angle, high efficiency, and adaptable beam shaping capability. The proposed structure consists of a topological junction of two guided-mode resonance gratings inducing a leaky Jackiw-Rebbi state resonance. The leaky Jackiw-Rebbi state leads to in-plane optical confinement with funnel-like energy flow and enhanced emission probability, resulting in highly efficient optical beam emission. In addition, the structure allows adaptable beam shaping for any desired positive definite profiles by means of Dirac mass distribution control, which can be directly encoded in lattice geometry parameters. Therefore, the proposed approach provides highly desirable properties for efficient micro–light emitters and detectors in various applications including display, solid-state light detection and ranging, laser machining, label-free sensors, optical interconnects, and telecommunications.
| Item Type: | Articles |
|---|---|
| Additional Information: | This research was supported in part by the Leader Researcher Program (NRF2019R1A3B2068083), the Basic Science Research Program (NRF-2018R1A2B3002539), and the research fund of Hanyang University (HY-202000000000513). K.Y.L. acknowledges the NRF Sejong Science fellowship (NRF-2022R1C1C2006290) funded by the MSIT of the Korean government. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Yoon, Mr Seungjin |
| Authors: | Lee, K. Y., Yoon, S., Song, S. H., and Yoon, J. W. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Science Advances |
| Publisher: | American Association for the Advancement of Science |
| ISSN: | 2375-2548 |
| ISSN (Online): | 2375-2548 |
| Published Online: | 09 December 2022 |
| Copyright Holders: | Copyright © 2022 The Authors |
| First Published: | First published in Science Advances 8(49): eadd8349 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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