Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum

Vasily Kravtsov; Ekaterina Khestanova; Fedor A. Benimetskiy; Tatiana Ivanova; Anton K. Samusev; Ivan S. Sinev; Dmitry Pidgayko; Alexey M. Mozharov; Ivan S. Mukhin; Maksim S. Lozhkin; Yuri V. Kapitonov; Andrey S. Brichkin; Vladimir D. Kulakovskii; Ivan A. Shelykh; Alexander I. Tartakovskii; Paul M. Walker; Maurice S. Skolnick; Dmitry N. Krizhanovskii; Ivan V. Iorsh

doi:10.1038/s41377-020-0286-z

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Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum

Letters

- Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum
- Light: Science & Applications Vol. 9, Issue 3, Pages: 491-498(2020)
- Affiliations：
  
  1.ITMO University, Saint Petersburg 197101, Russia
  2.St. Petersburg Academic University, Saint Petersburg 194021, Russia
  3.Saint Petersburg State University, ul. Ulyanovskaya 1, Saint Petersburg 198504, Russia
  4.Institute of Solid State Physics, RAS, Chernogolovka 142432, Russia
  5.Science Institute, University of Iceland, Dunhagi 3, IS-107, Reykjavik, Iceland
  6.Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
- Author bio：
  
  Vasily Kravtsov (vasily.kravtsov@metalab.ifmo.ru)
  Ekaterina Khestanova (ekaterina.khestanova@metalab.ifmo.ru)
  Ivan V. Iorsh (i.iorsh@metalab.ifmo.ru)
- Funds：
- DOI：10.1038/s41377-020-0286-z
  CLC：
- Published：2020，
  
  Published Online：09 April 2020，
  
  Received：16 September 2019，
  
  Revised：27 February 2020，
  
  Accepted：10 March 2020
- Accepted：
Scan QR Code
Kravtsov, V. et al. Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum. Light: Science & Applications, 9, 491-498 (2020).
DOI：

Kravtsov, V. et al. Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum. Light: Science & Applications, 9, 491-498 (2020). DOI： 10.1038/s41377-020-0286-z.

摘要

Abstract

Optical bound states in the continuum (BICs) provide a way to engineer very narrow resonances in photonic crystals. The extended interaction time in these systems is particularly promising

for the enhancement of nonlinear optical processes and the development of the next generation of active optical devices. However

the achievable interaction strength is limited by the purely photonic character of optical BICs. Here

we mix the optical BIC in a photonic crystal slab with excitons in the atomically thin semiconductor MoSe

to form nonlinear exciton-polaritons with a Rabi splitting of 27 meV

exhibiting large interaction-induced spectral blueshifts. The asymptotic BIC-like suppression of polariton radiation into the far field toward the BIC wavevector

in combination with effective reduction of the excitonic disorder through motional narrowing

results in small polariton linewidths below 3 meV. Together with a strongly wavevector-dependent

-factor

this provides for the enhancement and control of polariton–polariton interactions and the resulting nonlinear optical effects

paving the way toward tuneable BIC-based polaritonic devices for sensing

lasing

and nonlinear optics.

关键词

Keywords

references

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