Valley-selective optical Stark effect of exciton-polaritons in a monolayer semiconductor

Trevor Lamountain, Erik J. Lenferink, Samuel H. Amsterdam, Mark C. Hersam, Nathaniel P. Stern

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microcavity exciton-polaritons based on transition metal dichalcogenide monolayers (TMDs) are a promising platform for coherent valleytronics, exhibiting valley-dependent phenomena at roomerature. Using polarization-dependent transient reflectance, we demonstrate the valley-exclusive nature of the optical Stark effect in WS2 exciton-polaritons. We observe a simultaneous shift of both polariton branches when pump and probe are co-polarized and no appreciable shift when they are cross-polarized, demonstrating a polarization-selective stark shift in exciton-polaritons. This work highlights how the unique features of TMD exciton-polaritons can give rise to new polaritonic phenomena.

Original languageEnglish
Title of host publication2D Photonic Materials and Devices III
EditorsArka Majumdar, Carlos M. Torres, Hui Deng
PublisherSPIE
ISBN (Electronic)9781510633278
DOIs
Publication statusPublished - Jan 1 2020
Event2D Photonic Materials and Devices III 2020 - San Francisco, United States
Duration: Feb 5 2020Feb 6 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11282
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2D Photonic Materials and Devices III 2020
CountryUnited States
CitySan Francisco
Period2/5/202/6/20

Keywords

  • 2D Semiconductor
  • Exciton-Polariton
  • Optical Stark Effect
  • Valleytronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Valley-selective optical Stark effect of exciton-polaritons in a monolayer semiconductor'. Together they form a unique fingerprint.

Cite this