Terahertz induced transparency in single-layer graphene

Michael J. Paul, Byounghwak Lee, Jenna L. Wardini, Zachary J. Thompson, Andrew D. Stickel, Ali Mousavian, Hyunyong Choi, Ethan D. Minot, Yun Shik Lee

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We show that the transmission of a terahertz (THz) pulse through single-layer graphene is strongly nonlinear. As the peak electric field of the THz pulse exceeds 50 kV/cm, the graphene becomes increasingly transparent to the THz radiation. When field strength reaches 800 kV/cm, the increased transparency corresponds to a two-fold decrease in the time-average sheet conductivity of the graphene (time averaged over the duration of the pulse). Time-resolved measurements reveal that the leading portion of the pulse creates transparency for the trailing portion, with a 10-fold suppression in sheet conductivity at the tail of the strongest THz pulse. Comparing the THz-induced transparency phenomena in different sample geometries shows that substrate-free graphene is the best geometry for maximizing the nonlinear transparency effect.

Original languageEnglish
Article number221107
JournalApplied Physics Letters
Volume105
Issue number22
DOIs
Publication statusPublished - 2014 Dec 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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  • Cite this

    Paul, M. J., Lee, B., Wardini, J. L., Thompson, Z. J., Stickel, A. D., Mousavian, A., Choi, H., Minot, E. D., & Lee, Y. S. (2014). Terahertz induced transparency in single-layer graphene. Applied Physics Letters, 105(22), [221107]. https://doi.org/10.1063/1.4902999