Source-configured symmetry-broken hyperbolic polaritons

Caixing Hu; Tian Sun; Ying Zeng; Weiliang Ma; Zhigao Dai; Xiaosheng Yang; Xinliang Zhang; Peining Li

doi:10.1186/s43593-023-00047-1

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Source-configured symmetry-broken hyperbolic polaritons

光：快讯（英文） 2023年3卷第1期

RESEARCH ARTICLE | Updated：2024-09-25

- Source-configured symmetry-broken hyperbolic polaritons
- Source-configured symmetry-broken hyperbolic polaritons
- Affiliations：
  
  Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
  Optics Valley Laboratory, Hubei 430074, China
  Faculty of Materials Science and Chemistry, Engineering Research Center of NanoGeomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, China
  Xidian University, Xi'an 710126, China
- Author bio：
  
  *Zhigao Daidaizhigao@cug.edu.cn
  Xiaosheng Yangxiaosheng_yang@outlook.com
  Xinliang Zhangxlzhang@mail.hust.edu.cn
  Peining Lilipn@hust.edu.cn
- Funds：
  
  the National Natural Science Foundation of China(62075070;52172162);National Key Research and Development Program of China(2021YFA1201500);Hubei Provincial Natural Science Foundation of China(2022CFA053);the Innovation Fund of WNLO. Z.D. acknowledges support from the Natural Science Foundation of Guangdong Province(2022A1515012145);Shenzhen Science and Technology Program(JCYJ20220530162403007);Key Research and Development Plan of Hubei Province. W.M. acknowledges the support from the Fundamental Research Funds for the Central Universities, HUST(2022JYCXJJ009)
- DOI：10.1186/s43593-023-00047-1
  中图分类号：
- 纸质出版日期：2023，
  
  网络出版日期：2023-06-07，
  
  收稿日期：2023-04-02，
  
  修回日期：2023-05-04，
  
  录用日期：2023-05-08
- Accepted：
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Source-configured symmetry-broken hyperbolic polaritons[J]. 光：快讯（英文）, 2023,3(1).

Caixing Hu, Tian Sun, Ying Zeng, et al. Source-configured symmetry-broken hyperbolic polaritons[J]. eLight, 2023,3(1).
Source-configured symmetry-broken hyperbolic polaritons[J]. 光：快讯（英文）, 2023,3(1). DOI： 10.1186/s43593-023-00047-1.

Caixing Hu, Tian Sun, Ying Zeng, et al. Source-configured symmetry-broken hyperbolic polaritons[J]. eLight, 2023,3(1). DOI： 10.1186/s43593-023-00047-1.

摘要

Abstract

Polaritons are quasi-particles that combine light with matter

enabling precise control of light at deep subwavelength scales. The excitation and propagation of polaritons are closely linked to the structural symmetries of the host materials

resulting in symmetrical polariton propagation in high-symmetry materials. However

in low-symmetry crystals

symmetry-broken polaritons exist

exhibiting enhanced directionality of polariton propagation for nanoscale light manipulation and steering. Here

we theoretically propose and experimentally demonstrate the existence of symmetry-broken polaritons

with hyperbolic dispersion

in a high-symmetry crystal. We show that an optical disk-antenna positioned on the crystal surface can act as an in-plane polarized excitation source

enabling dynamic tailoring of the asymmetry of hyperbolic polariton propagation in the high-symmetry crystal over a broad frequency range. Additionally

we provide an intuitive analysis model that predicts the condition under which the asymmetric polaritonic behavior is maximized

which is corroborated by our simulations and experiments. Our results demonstrate that the directionality of polariton propagation can be conveniently configured

independent of the structure symmetry of crystals

providing a tuning knob for the polaritonic response and in-plane anisotropy in nanophotonic applications.

关键词

Keywords

Hyperbolic polaritonsNear-field excitationCrystal symmetryIn-plane polarizationCalcite

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