Nonlinear THz conductivity dynamics in P-Type CVD-grown graphene

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

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)15819-15824
Number of pages6
JournalJournal of Physical Chemistry B
Volume117
Issue number49
DOIs
StatePublished - Dec 12 2013

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