Terahertz radiation from a laser plasma filament

H.-C. Wu (武慧春), J. Meyer-ter-Vehn, H. Ruhl, and Z.-M. Sheng ( 盛政明)
Phys. Rev. E 83, 036407 – Published 15 March 2011

Abstract

By the use of two-dimensional particle-in-cell simulations, we clarify the terahertz (THz) radiation mechanism from a plasma filament formed by an intense femtosecond laser pulse. The nonuniform plasma density of the filament leads to a net radiating current for THz radiation. This current is mainly located within the pulse and the first cycle of the wakefield. As the laser pulse propagates, a single-cycle and radially polarized THz pulse is constructively built up forward. The single-cycle shape is mainly due to radiation damping effect.

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  • Received 13 May 2010

DOI:https://doi.org/10.1103/PhysRevE.83.036407

©2011 American Physical Society

Authors & Affiliations

H.-C. Wu (武慧春)1,*, J. Meyer-ter-Vehn1, H. Ruhl2, and Z.-M. Sheng ( 盛政明)3,4

  • 1Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany
  • 2Department für Physik der Ludwig-Maximillians-Universität, Theresienstrasse 37A, D-80333 München, Germany
  • 3Institute of Plasma Studies, Department of Physics, Shanghai Jiaotong University, Shanghai 200240, China
  • 4Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China

  • *Present address: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. E-mail: hcwu@lanl.gov

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Vol. 83, Iss. 3 — March 2011

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