Nonlinear transmission of an intense terahertz field through monolayer graphene

H. A. Hafez, I. Al-Naib, K. Oguri, Y. Sekine, M. M. Dignam, A. Ibrahim, D. G. Cooke, S. Tanaka, F. Komori, H. Hibino, T. Ozaki

研究成果: ジャーナルへの寄稿記事

20 引用 (Scopus)

抄録

We report nonlinear terahertz (THz) effects in monolayer graphene, giving rise to transmission enhancement of a single-cycle THz pulse when the incident THz peak electric field is increased. This transmission enhancement is attributed to reduced photoconductivity, due to saturation effects in the field-induced current and increased intraband scattering rates arising from transient heating of electrons. We have developed a tight-binding model of the response using the length gauge interaction Hamiltonian that provides good qualitative agreement. The model fully accounts for the nonlinear response arising from the linear dispersion energy spectrum in graphene. The results reveal a strong dependence of the scattering time on the THz field, which is at the heart of the observed nonlinear response.

元の言語英語
記事番号117118
ジャーナルAIP Advances
4
発行部数11
DOI
出版物ステータス出版済み - 11 1 2014

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graphene
transient heating
augmentation
scattering
photoconductivity
energy spectra
saturation
cycles
electric fields
pulses
electrons
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Hafez, H. A., Al-Naib, I., Oguri, K., Sekine, Y., Dignam, M. M., Ibrahim, A., ... Ozaki, T. (2014). Nonlinear transmission of an intense terahertz field through monolayer graphene. AIP Advances, 4(11), [117118]. https://doi.org/10.1063/1.4902096

Nonlinear transmission of an intense terahertz field through monolayer graphene. / Hafez, H. A.; Al-Naib, I.; Oguri, K.; Sekine, Y.; Dignam, M. M.; Ibrahim, A.; Cooke, D. G.; Tanaka, S.; Komori, F.; Hibino, H.; Ozaki, T.

:: AIP Advances, 巻 4, 番号 11, 117118, 01.11.2014.

研究成果: ジャーナルへの寄稿記事

Hafez, HA, Al-Naib, I, Oguri, K, Sekine, Y, Dignam, MM, Ibrahim, A, Cooke, DG, Tanaka, S, Komori, F, Hibino, H & Ozaki, T 2014, 'Nonlinear transmission of an intense terahertz field through monolayer graphene', AIP Advances, 巻. 4, 番号 11, 117118. https://doi.org/10.1063/1.4902096
Hafez HA, Al-Naib I, Oguri K, Sekine Y, Dignam MM, Ibrahim A その他. Nonlinear transmission of an intense terahertz field through monolayer graphene. AIP Advances. 2014 11 1;4(11). 117118. https://doi.org/10.1063/1.4902096
Hafez, H. A. ; Al-Naib, I. ; Oguri, K. ; Sekine, Y. ; Dignam, M. M. ; Ibrahim, A. ; Cooke, D. G. ; Tanaka, S. ; Komori, F. ; Hibino, H. ; Ozaki, T. / Nonlinear transmission of an intense terahertz field through monolayer graphene. :: AIP Advances. 2014 ; 巻 4, 番号 11.
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AU - Dignam, M. M.

AU - Ibrahim, A.

AU - Cooke, D. G.

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