Room-temperature lasing from nanophotonic topological cavities

Daria Smirnova; Aditya Tripathi; Sergey Kruk; Min-Soo Hwang; Ha-Reem Kim; Hong-Gyu Park; Yuri Kivshar

doi:10.1038/s41377-020-00350-3

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Room-temperature lasing from nanophotonic topological cavities

Article

- Room-temperature lasing from nanophotonic topological cavities
- Room-temperature lasing from nanophotonic topological cavities
- LSA 2020年9卷第4期页码：1238-1245
- Affiliations：
  
  1.Nonlinear Physics Center, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
  2.Institute of Applied Physics, Russian Academy of Science, Nizhny Novgorod 603950, Russia
  3.Department of Physics, Indian Institute of Technology, Delhi 110016, India
  4.Department of Physics, Korea University, Seoul 02841, Republic of Korea
- Author bio：
  
  Hong-Gyu Park (hgpark@korea.ac.kr)
  Yuri Kivshar (ysk@internode.on.net)
- Funds：
- DOI：10.1038/s41377-020-00350-3
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-07-20，
  
  收稿日期：2020-01-16，
  
  修回日期：2020-06-06，
  
  录用日期：2020-06-15
- Accepted：
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Room-temperature lasing from nanophotonic topological cavities[J]. LSA, 2020,9(4):1238-1245.

Smirnova, D. et al. Room-temperature lasing from nanophotonic topological cavities. Light: Science & Applications, 9, 1238-1245 (2020).
Room-temperature lasing from nanophotonic topological cavities[J]. LSA, 2020,9(4):1238-1245. DOI： 10.1038/s41377-020-00350-3.

Smirnova, D. et al. Room-temperature lasing from nanophotonic topological cavities. Light: Science & Applications, 9, 1238-1245 (2020). DOI： 10.1038/s41377-020-00350-3.

摘要

Abstract

The study of topological phases of light underpins a promising paradigm for engineering disorder-immune compact photonic devices with unusual properties. Combined with an optical gain

topological photonic structures provide a novel platform for micro- and nanoscale lasers

which could benefit from nontrivial band topology and spatially localized gap states. Here

we propose and demonstrate experimentally active nanophotonic topological cavities incorporating III–V semiconductor quantum wells as a gain medium in the structure. We observe room-temperature lasing with a narrow spectrum

high coherence

and threshold behaviour. The emitted beam hosts a singularity encoded by a triade cavity mode that resides in the bandgap of two interfaced valley-Hall periodic photonic lattices with opposite parity breaking. Our findings make a step towards topologically controlled ultrasmall light sources with nontrivial radiation characteristics.

关键词

Keywords

references

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