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

doi:10.1063/1.4902999

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

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

31 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 language	English
Article number	221107
Journal	Applied Physics Letters
Volume	105
Issue number	22
DOIs	https://doi.org/10.1063/1.4902999
Publication status	Published - 2014 Dec 1

Bibliographical note

Publisher Copyright:
© 2014 AIP Publishing LLC.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4902999

Cite this

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title = "Terahertz induced transparency in single-layer graphene",

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.",

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AU - Paul, Michael J.

AU - Lee, Byounghwak

AU - Wardini, Jenna L.

AU - Thompson, Zachary J.

AU - Stickel, Andrew D.

AU - Mousavian, Ali

AU - Choi, Hyunyong

AU - Minot, Ethan D.

AU - Lee, Yun Shik

PY - 2014/12/1

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Terahertz induced transparency in single-layer graphene

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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