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Detecting sum-frequency-generated light from gated graphene nanostructures and nanoribbons

ORAL

Abstract

Graphene nanostructures and nanoribbons exhibit remarkable nonlinear optical behavior when subjected to intense local electric fields [1,2]. In some instances, signatures of high harmonic generation have been detected in graphene [3], while second harmonic generation and difference frequency mixing is routinely observed. The experimental signatures of these nonlinear processes are detected through interferometric methods [4]. We describe efforts to directly measure blue light emanating from graphene and graphene nanoribbons that are gated at ~10 nm scales. The detection of sum-frequency-generated light in the far field would help in the quantification of these effects.

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Publication: [1] Sheridan, E. et al. Nano Lett. (2020) doi:10.1021/acs.nanolett.0c01379<br>[2] Sheridan, E. et al. APL Materials 9, 071101 (2021)<br>[3] Sheridan, E. et al., unpublished.<br>[4] L. Chen, et al., Light: Science & Appl. 8, 24 (2019).

Presenters

  • Pubudu G Wijesinghe

    University of Pittsburgh

Authors

  • Pubudu G Wijesinghe

    University of Pittsburgh

  • Erin Sheridan

    University of Pittsburgh

  • Melanie Dieterlen

    University of Pittsburgh

  • Patrick Irvin

    University of Pittsburgh

  • Jeremy Levy

    University of Pittsburgh, University of Pittsburgh, Department of Physics and Astronomy, Pittsburgh, PA 15260, USA

  • Ki-Tae Eom

    University of Wisconsin - Madison, University of Wisconsin-Madison, Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA, University of Wisconsin Madison

  • Chang-Beom Eom

    University of Wisconsin - Madison, Oxide Laboratory, University of Wisconsin - Madison