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.
*JL acknowledges support from ONR N00014-20-1-2481. JL and PI acknowledge support from DOE-QIS. The research is funded in part by the Gordon and Betty Moore Foundation's EPiQS Initiative, grant GBMF9065 to C.B.E. and Vannevar Bush Faculty Fellowship (ONR N00014-20-1-2844).
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Publication: [1] Sheridan, E. et al. Nano Lett. (2020) doi:10.1021/acs.nanolett.0c01379
[2] Sheridan, E. et al. APL Materials 9, 071101 (2021)
[3] Sheridan, E. et al., unpublished.
[4] L. Chen, et al., Light: Science & Appl. 8, 24 (2019).
Presenters
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Pubudu G Wijesinghe
- University of Pittsburgh