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Interlayer exciton laser of extended spatial coherence in atomically thin heterostructures

Author

Listed:
  • Eunice Y. Paik

    (University of Michigan)

  • Long Zhang

    (University of Michigan)

  • G. William Burg

    (The University of Texas at Austin)

  • Rahul Gogna

    (University of Michigan)

  • Emanuel Tutuc

    (The University of Texas at Austin)

  • Hui Deng

    (University of Michigan)

Abstract

Two-dimensional semiconductors have emerged as a new class of materials for nanophotonics owing to their strong exciton–photon interaction1,2 and their ability to be engineered and integrated into devices3. Here we take advantage of these properties to engineer an efficient lasing medium based on direct-bandgap interlayer excitons in rotationally aligned atomically thin heterostructures4. Lasing is measured from a transition-metal dichalcogenide heterobilayer (WSe2–MoSe2) integrated in a silicon nitride grating resonator. An abrupt increase in the spatial coherence of the emission is observed across the lasing threshold. The work establishes interlayer excitons in two-dimensional heterostructures as a gain medium with spatially coherent lasing emission and potential for heterogeneous integration. With electrically tunable exciton–photon interaction strengths5 and long-range dipolar interactions, these interlayer excitons are promising for application as low-power, ultrafast lasers and modulators and for the study of many-body quantum phenomena6.

Suggested Citation

  • Eunice Y. Paik & Long Zhang & G. William Burg & Rahul Gogna & Emanuel Tutuc & Hui Deng, 2019. "Interlayer exciton laser of extended spatial coherence in atomically thin heterostructures," Nature, Nature, vol. 576(7785), pages 80-84, December.
    • Handle: RePEc:nat:nature:v:576:y:2019:i:7785:d:10.1038_s41586-019-1779-x
    DOI: 10.1038/s41586-019-1779-x
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    Cited by:

    1. Juan Francisco Gonzalez Marin & Dmitrii Unuchek & Zhe Sun & Cheol Yeon Cheon & Fedele Tagarelli & Kenji Watanabe & Takashi Taniguchi & Andras Kis, 2022. "Room-temperature electrical control of polarization and emission angle in a cavity-integrated 2D pulsed LED," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Qiuyang Li & Adam Alfrey & Jiaqi Hu & Nathanial Lydick & Eunice Paik & Bin Liu & Haiping Sun & Yang Lu & Ruoyu Wang & Stephen Forrest & Hui Deng, 2023. "Macroscopic transition metal dichalcogenides monolayers with uniformly high optical quality," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Jiaxin Zhao & Antonio Fieramosca & Kevin Dini & Ruiqi Bao & Wei Du & Rui Su & Yuan Luo & Weijie Zhao & Daniele Sanvitto & Timothy C. H. Liew & Qihua Xiong, 2023. "Exciton polariton interactions in Van der Waals superlattices at room temperature," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    4. Ruishi Qi & Andrew Y. Joe & Zuocheng Zhang & Yongxin Zeng & Tiancheng Zheng & Qixin Feng & Jingxu Xie & Emma Regan & Zheyu Lu & Takashi Taniguchi & Kenji Watanabe & Sefaattin Tongay & Michael F. Cromm, 2023. "Thermodynamic behavior of correlated electron-hole fluids in van der Waals heterostructures," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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