Strain tuning of linear and nonlinear optical properties of bilayer MoS2

ORAL

Abstract

Naturally occurring Mo-based bilayers of Transition Metal Dichalcogenides (TMDCs) like MoS2 and MoSe2 have recently attracted interest due to interlayer excitons with substantial oscillator strength. Further, it has been shown that this interlayer exciton properties can also be controlled by external electric field. Here we show that strain can also be used to tune both linear and nonlinear optical properties of bilayer MoS2. We do a comparative study of A, B, interlayer (IE), and C excitons under strain to reveal how strain changes the band structures of bilayer MoS2 and how that affects the nonlinear optical properties.

*We acknowledge support from ARO through grant W911NF-22-1-0091; NSF DMR-2011738, and AFOSR-FA2386-21-1-4087. The low-temperature spectroscopy facility was supported by NSF MRI grant - DMR-1726573.

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Presenters

  • Biswajit Datta

    • The City College of New York
    • City university of New York
    • University of California, Santa Barbara

Authors

  • Biswajit Datta

    • The City College of New York
    • City university of New York
    • University of California, Santa Barbara

  • Saroj B Chand

    • Photonics Initiative, Advanced Science Research Center, City University of New York
    • Photonics Initiative, CUNY Advanced Science Research Center

  • Charanjot Singh

    • City College of New York

  • Gabriele Grosso

    • ASRC CUNY

  • Vinod M Menon

    • The City College of New York
    • City College of New York