Nonlinear THz Conductivity Dynamics in CVD-Grown Graphene

Details Nonlinear THz Conductivity Dynamics in CVD-Grown Graphene Nonlinear THz Conductivity Dynamics in CVD-Grown Graphene

2011-01-26

arxiv.org/abs/1101.4985v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

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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