Terahertz radiation from a wire target irradiated by an ultra-intense laser pulse

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2734945· OSTI ID:20975020

Zhichao, Li; Jian, Zheng ^[1]

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1. CAS Key Laboratory of Basic Plasma Physics and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

When an ultra-intense laser pulse impacts the tip of a wire whose other end is grounded, a strong return current can be driven along the wire because some energetic electrons generated in ultra-intense laser matter interaction can escape from the target and an electric field builds up. The wire then behaves like a current-carrying antenna that can emit electromagnetic radiations. If the duration of the driving pulse is several tens of femtoseconds, the radiation spectrum reaches a maximum at terahertz region, and the radiation power per solid angle could be as high as 10{sup 9} W/rad.

• OSTI ID: 20975020
• Journal Information: Physics of Plasmas, Vol. 14, Issue 5; Other Information: DOI: 10.1063/1.2734945; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
CURRENTS
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
INTERACTIONS
IRRADIATION
LASERS
PLASMA
PULSES
TAIL ELECTRONS
WIRES