From Event: SPIE Optical Engineering + Applications, 2019
In this presentation we will demonstrate a highly efficient generation of higher-order THz harmonics in graphene. The underlying physics is the collective, thermal response of the free electrons in graphene to the driving THz fields. As a result, graphene possesses the nonlinear coefficients several order of magnitude higher than other typical solids.
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Dmitry Turchinovich, "Highly efficient terahertz high-harmonic generation in graphene (Conference Presentation)," Proc. SPIE 11124, Terahertz Emitters, Receivers, and Applications X, 111240H (Presented at SPIE Optical Engineering + Applications: August 11, 2019; Published: 12 September 2019); https://doi.org/10.1117/12.2528491.6084155331001.