Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse

Z. Jin, H. B. Zhuo, T. Nakazawa, J. H. Shin, S. Wakamatsu, N. Yugami, T. Hosokai, D. B. Zou, M. Y. Yu, Z. M. Sheng, R. Kodama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Radially polarized intense terahertz (THz) radiation behind a thin foil irradiated by ultrahigh-contrast ultrashort relativistic laser pulse is recorded by a single-shot THz time-domain spectroscopy system. As the thickness of the target is reduced from 30 to 2 µm, the duration of the THz emission increases from 5 to over 20 ps and the radiation energy increases dramatically, reaching ~10.5 mJ per pulse, corresponding to laser-to-THz radiation energy conversion efficiency of 1.7%. The efficient THz emission can be attributed to reflection (deceleration and acceleration) of the laser driven hot electrons by the target-rear sheath electric field. The experimental results are consistent with that of a simple model as well as particle-in-cell simulation.
LanguageEnglish
Article number03320
JournalPhysical Review E
Volume94
DOIs
Publication statusPublished - 26 Sep 2016

Fingerprint

foils
Radiation
Laser
radiation
pulses
lasers
energy conversion efficiency
deceleration
hot electrons
sheaths
shot
Target
Energy
electric fields
Spectroscopy
Time Domain
cells
Electric Field
spectroscopy
Electron

Keywords

  • terahertz radiation
  • laser pulse
  • ultrahigh-contrast
  • ultrashort
  • reflection
  • electric fields
  • transport properties
  • particle beam interactions
  • plasma

Cite this

Jin, Z., Zhuo, H. B., Nakazawa, T., Shin, J. H., Wakamatsu, S., Yugami, N., ... Kodama, R. (2016). Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse. Physical Review E, 94, [03320]. https://doi.org/10.1103/PhysRevE.94.033206
Jin, Z. ; Zhuo, H. B. ; Nakazawa, T. ; Shin, J. H. ; Wakamatsu, S. ; Yugami, N. ; Hosokai, T. ; Zou, D. B. ; Yu, M. Y. ; Sheng, Z. M. ; Kodama, R. / Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse. In: Physical Review E. 2016 ; Vol. 94.
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abstract = "Radially polarized intense terahertz (THz) radiation behind a thin foil irradiated by ultrahigh-contrast ultrashort relativistic laser pulse is recorded by a single-shot THz time-domain spectroscopy system. As the thickness of the target is reduced from 30 to 2 µm, the duration of the THz emission increases from 5 to over 20 ps and the radiation energy increases dramatically, reaching ~10.5 mJ per pulse, corresponding to laser-to-THz radiation energy conversion efficiency of 1.7{\%}. The efficient THz emission can be attributed to reflection (deceleration and acceleration) of the laser driven hot electrons by the target-rear sheath electric field. The experimental results are consistent with that of a simple model as well as particle-in-cell simulation.",
keywords = "terahertz radiation, laser pulse, ultrahigh-contrast, ultrashort, reflection, electric fields, transport properties, particle beam interactions, plasma",
author = "Z. Jin and Zhuo, {H. B.} and T. Nakazawa and Shin, {J. H.} and S. Wakamatsu and N. Yugami and T. Hosokai and Zou, {D. B.} and Yu, {M. Y.} and Sheng, {Z. M.} and R. Kodama",
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Jin, Z, Zhuo, HB, Nakazawa, T, Shin, JH, Wakamatsu, S, Yugami, N, Hosokai, T, Zou, DB, Yu, MY, Sheng, ZM & Kodama, R 2016, 'Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse' Physical Review E, vol. 94, 03320. https://doi.org/10.1103/PhysRevE.94.033206

Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse. / Jin, Z.; Zhuo, H. B. ; Nakazawa, T.; Shin, J. H.; Wakamatsu, S.; Yugami, N.; Hosokai, T.; Zou, D. B.; Yu, M. Y.; Sheng, Z. M.; Kodama, R.

In: Physical Review E, Vol. 94, 03320, 26.09.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Highly efficient terahertz radiation from a thin foil irradiated by a high-contrast laser pulse

AU - Jin, Z.

AU - Zhuo, H. B.

AU - Nakazawa, T.

AU - Shin, J. H.

AU - Wakamatsu, S.

AU - Yugami, N.

AU - Hosokai, T.

AU - Zou, D. B.

AU - Yu, M. Y.

AU - Sheng, Z. M.

AU - Kodama, R.

PY - 2016/9/26

Y1 - 2016/9/26

N2 - Radially polarized intense terahertz (THz) radiation behind a thin foil irradiated by ultrahigh-contrast ultrashort relativistic laser pulse is recorded by a single-shot THz time-domain spectroscopy system. As the thickness of the target is reduced from 30 to 2 µm, the duration of the THz emission increases from 5 to over 20 ps and the radiation energy increases dramatically, reaching ~10.5 mJ per pulse, corresponding to laser-to-THz radiation energy conversion efficiency of 1.7%. The efficient THz emission can be attributed to reflection (deceleration and acceleration) of the laser driven hot electrons by the target-rear sheath electric field. The experimental results are consistent with that of a simple model as well as particle-in-cell simulation.

AB - Radially polarized intense terahertz (THz) radiation behind a thin foil irradiated by ultrahigh-contrast ultrashort relativistic laser pulse is recorded by a single-shot THz time-domain spectroscopy system. As the thickness of the target is reduced from 30 to 2 µm, the duration of the THz emission increases from 5 to over 20 ps and the radiation energy increases dramatically, reaching ~10.5 mJ per pulse, corresponding to laser-to-THz radiation energy conversion efficiency of 1.7%. The efficient THz emission can be attributed to reflection (deceleration and acceleration) of the laser driven hot electrons by the target-rear sheath electric field. The experimental results are consistent with that of a simple model as well as particle-in-cell simulation.

KW - terahertz radiation

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KW - ultrashort

KW - reflection

KW - electric fields

KW - transport properties

KW - particle beam interactions

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