Superradiant coupling effects in transition-metal dichalcogenides

C. E. Stevens, T. Stroucken, A. V. Stier, J. Paul, H. Zhang, P. Dey, S. A. Crooker, Stephan W Koch, D. Karaiskaj

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3 Scopus citations

Abstract

Cooperative effects allow for fascinating characteristics in light–matter interacting systems. Here, we study naturally occurring superradiant coupling in a class of quasi–two-dimensional, layered semiconductor systems. We perform optical absorption experiments of the lowest exciton for transition-metal dichalcogenides with different numbers of atomic layers. We examine two representative materials, MoSe2 and WSe2, using incoherent broadband white light. The measured transmission at the A exciton resonance does not saturate for optically thick samples consisting of hundreds of atomic layers, and the transmission varies nonmonotonously with the layer number. A self-consistent microscopic calculation reproduces the experimental observations, clearly identifying superradiant coupling effects as the origin of this unexpected behavior.

Original languageEnglish (US)
Article number060749-07
Pages (from-to)749-755
Number of pages7
JournalOptica
Volume5
Issue number6
DOIs
Publication statusPublished - Jun 20 2018
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Stevens, C. E., Stroucken, T., Stier, A. V., Paul, J., Zhang, H., Dey, P., ... Karaiskaj, D. (2018). Superradiant coupling effects in transition-metal dichalcogenides. Optica, 5(6), 749-755. [060749-07]. https://doi.org/10.1364/OPTICA.5.000749