Terahertz generation from laser-driven ultrafast current propagation along a wire target

H. B. Zhuo, S. J. Zhang, X. H. Li, H. Y. Zhou, X. Z. Li, D. B. Zou, M. Y. Yu, H. C. Wu, Z. M. Sheng, C. T. Zhou

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Generation of intense coherent THz radiation by obliquely incidenting an intense laser pulse on a wire target is studied using particle-in-cell simulation. The laser-accelerated fast electrons are confined and guided along the surface of the wire, which then acts like a current-carrying line antenna and under appropriate conditions can emit electromagnetic radiation in the THz regime. For a driving laser intensity ∼3×1018W/cm2 and pulse duration ∼10 fs, a transient current above 10 KA is produced on the wire surface. The emission-cone angle of the resulting ∼0.15 mJ (∼58 GV/m peak electric field) THz radiation is ∼30°. The conversion efficiency of laser-to-THz energy is ∼0.75%. A simple analytical model that well reproduces the simulated result is presented.

LanguageEnglish
Article number013201
Pages1-6
Number of pages6
JournalPhysical Review E
Volume95
Issue number1
DOIs
Publication statusPublished - 5 Jan 2017

Fingerprint

wire
Propagation
Laser
Target
propagation
Radiation
lasers
coherent radiation
Analytical Model
Antenna
Electric Field
electromagnetic radiation
cones
pulse duration
Cone
antennas
Electron
Angle
electric fields
Line

Keywords

  • intense coherent teraherz wave
  • teraherz generation
  • current propagation
  • radiated energy
  • wire targets

Cite this

Zhuo, H. B., Zhang, S. J., Li, X. H., Zhou, H. Y., Li, X. Z., Zou, D. B., ... Zhou, C. T. (2017). Terahertz generation from laser-driven ultrafast current propagation along a wire target. Physical Review E, 95(1), 1-6. [013201]. https://doi.org/10.1103/PhysRevE.95.013201
Zhuo, H. B. ; Zhang, S. J. ; Li, X. H. ; Zhou, H. Y. ; Li, X. Z. ; Zou, D. B. ; Yu, M. Y. ; Wu, H. C. ; Sheng, Z. M. ; Zhou, C. T. / Terahertz generation from laser-driven ultrafast current propagation along a wire target. In: Physical Review E. 2017 ; Vol. 95, No. 1. pp. 1-6.
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Zhuo, HB, Zhang, SJ, Li, XH, Zhou, HY, Li, XZ, Zou, DB, Yu, MY, Wu, HC, Sheng, ZM & Zhou, CT 2017, 'Terahertz generation from laser-driven ultrafast current propagation along a wire target' Physical Review E, vol. 95, no. 1, 013201, pp. 1-6. https://doi.org/10.1103/PhysRevE.95.013201

Terahertz generation from laser-driven ultrafast current propagation along a wire target. / Zhuo, H. B.; Zhang, S. J.; Li, X. H.; Zhou, H. Y.; Li, X. Z.; Zou, D. B.; Yu, M. Y.; Wu, H. C.; Sheng, Z. M.; Zhou, C. T.

In: Physical Review E, Vol. 95, No. 1, 013201, 05.01.2017, p. 1-6.

Research output: Contribution to journalArticle

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AU - Zhuo, H. B.

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AU - Li, X. H.

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AU - Li, X. Z.

AU - Zou, D. B.

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