Gate-tunable Kerr nonlinearity of graphene in the mid-infrared

Gauri Patwardhan; Gauri Patwardhan; M. Mehdi Jadidi; Brian S. Lee; Ipshita Datta; Jared S. Ginsberg; Cecilia Y. Chen; Michal Lipson; Michal Lipson; Alexander L. Gaeta; Alexander L. Gaeta

doi:10.1364/CLEO_QELS.2020.FTh1Q.6

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2020),
paper FTh1Q.6
•https://doi.org/10.1364/CLEO_QELS.2020.FTh1Q.6

Gate-tunable Kerr nonlinearity of graphene in the mid-infrared

Gauri Patwardhan, M. Mehdi Jadidi, Brian S. Lee, Ipshita Datta, Jared S. Ginsberg, Cecilia Y. Chen, Michal Lipson, and Alexander L. Gaeta

CLEO: QELS_Fundamental Science 2020

Washington, DC United States
10–15 May 2020
ISBN: 978-1-943580-76-7

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Ultrafast Phenomena in Quantum Condensed Matter Systems (FTh1Q)

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G. Patwardhan, M. M. Jadidi, B. S. Lee, I. Datta, J. S. Ginsberg, C. Y. Chen, M. Lipson, and A. L. Gaeta, "Gate-tunable Kerr nonlinearity of graphene in the mid-infrared," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2020), paper FTh1Q.6.

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Abstract

We measure the nonlinear refractive index n₂, two-photon absorption coefficient, and hot-electron nonlinearity of gated graphene in the mid-IR regime. Our results show that both the magnitude and sign of n₂ can be voltage-controlled.

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