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arXiv · 1101.4985

Nonlinear THz Conductivity Dynamics in CVD-Grown Graphene

Harold Y. Hwang·Nathaniel C. Brandt·Hootan Farhat·Allen L. Hsu·Jing Kong·Keith A. Nelson
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Abstract

We report strong THz-induced transparency in CVD-grown graphene where 92%-96% of the peak-field is transmitted compared to 74% at lower field strength. Time-resolved THz-pump/THz-probe studies reveal that the absorption recovers in 2-3 ps. The induced transparency is believed to arise from nonlinear pumping of carriers in graphene which suppresses the mobility and consequently the conductivity in a spectral region where the light-matter interaction is particularly strong.

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Harold Y. Hwang, Nathaniel C. Brandt, Hootan Farhat, Allen L. Hsu, Jing Kong, Keith A. Nelson. 2011-01-26. Nonlinear THz Conductivity Dynamics in CVD-Grown Graphene. https://arxiv.org/abs/1101.4985

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