Polarized light emission from graphene induced by terahertz pulses

I. V. Oladyshkin; S. B. Bodrov; A. V. Korzhimanov; A. A. Murzanev; Yu A. Sergeev; A. I. Korytin; M. D. Tokman; A. N. Stepanov

doi:10.1103/PhysRevB.106.205407

Polarized light emission from graphene induced by terahertz pulses

I. V. Oladyshkin, S. B. Bodrov, A. V. Korzhimanov, A. A. Murzanev, Yu A. Sergeev, A. I. Korytin, M. D. Tokman, A. N. Stepanov

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

2 Scopus citations

Abstract

Spontaneous optical emission of graphene irradiated by intense single-cycle terahertz pulses was studied experimentally and explained theoretically. We found that the emitted photons are mainly polarized normally to the electric field of the terahertz pulse, which proves that the terahertz field not only heats the electrons, but also creates a strongly nonequilibrium momentum distribution. The comparison of the measured optical spectrum and polarization anisotropy with the results of numerical modeling allowed us to estimate the momentum isotropization time for electrons in graphene to be ∼25 fs and roughly reconstruct the time evolution of the distribution function in k space.

Original language	English
Article number	205407
Journal	Physical Review B
Volume	106
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.106.205407
State	Published - 15 Nov 2022
Externally published	Yes

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title = "Polarized light emission from graphene induced by terahertz pulses",

abstract = "Spontaneous optical emission of graphene irradiated by intense single-cycle terahertz pulses was studied experimentally and explained theoretically. We found that the emitted photons are mainly polarized normally to the electric field of the terahertz pulse, which proves that the terahertz field not only heats the electrons, but also creates a strongly nonequilibrium momentum distribution. The comparison of the measured optical spectrum and polarization anisotropy with the results of numerical modeling allowed us to estimate the momentum isotropization time for electrons in graphene to be ∼25 fs and roughly reconstruct the time evolution of the distribution function in k space.",

author = "Oladyshkin, {I. V.} and Bodrov, {S. B.} and Korzhimanov, {A. V.} and Murzanev, {A. A.} and Sergeev, {Yu A.} and Korytin, {A. I.} and Tokman, {M. D.} and Stepanov, {A. N.}",

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doi = "10.1103/PhysRevB.106.205407",

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AU - Oladyshkin, I. V.

AU - Bodrov, S. B.

AU - Korzhimanov, A. V.

AU - Murzanev, A. A.

AU - Sergeev, Yu A.

AU - Korytin, A. I.

AU - Tokman, M. D.

AU - Stepanov, A. N.

PY - 2022/11/15

Y1 - 2022/11/15

N2 - Spontaneous optical emission of graphene irradiated by intense single-cycle terahertz pulses was studied experimentally and explained theoretically. We found that the emitted photons are mainly polarized normally to the electric field of the terahertz pulse, which proves that the terahertz field not only heats the electrons, but also creates a strongly nonequilibrium momentum distribution. The comparison of the measured optical spectrum and polarization anisotropy with the results of numerical modeling allowed us to estimate the momentum isotropization time for electrons in graphene to be ∼25 fs and roughly reconstruct the time evolution of the distribution function in k space.

AB - Spontaneous optical emission of graphene irradiated by intense single-cycle terahertz pulses was studied experimentally and explained theoretically. We found that the emitted photons are mainly polarized normally to the electric field of the terahertz pulse, which proves that the terahertz field not only heats the electrons, but also creates a strongly nonequilibrium momentum distribution. The comparison of the measured optical spectrum and polarization anisotropy with the results of numerical modeling allowed us to estimate the momentum isotropization time for electrons in graphene to be ∼25 fs and roughly reconstruct the time evolution of the distribution function in k space.

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Polarized light emission from graphene induced by terahertz pulses

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