Experiments of Frequency Upshift by Use of a Laser-Produced Ionization Front

Journal Article · Mon Nov 27 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2409213· OSTI ID:20898753

Ohata, Nobuo; Higashiguchi, Takeshi; Kawanago, Hiroshi; Yaegashi, Kenta; Takano, Ichiro; Li, Kun; Yugami, Noboru ^[1]

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1. Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585 (Japan)

In a DC to AC radiation converter (DARC) source, a short microwave wave pulse was emitted by the interaction between a periodic electrostatic field and a laser-produced ionization front. An emission frequency was observed from 8 to 42 GHz and depended on a plasma density, a perpendicular DC magnetic field strength, and a cut-off frequency (i.e., boundary effect) of the rectangular waveguide, respectively. The short THz pulse emission from a femtosecond-laser-pumped DARC source was also demonstrated by use of a 150-fs Ti:sapphire laser pulse.

• OSTI ID: 20898753
• Journal Information: AIP Conference Proceedings, Vol. 877, Issue 1; Conference: 12. advanced accelerator concepts workshop, Lake Geneva, WI (United States), 10-15 Jul 2006; Other Information: DOI: 10.1063/1.2409213; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
IONIZATION
LASERS
MAGNETIC FIELDS
MICROWAVE RADIATION
PERIODICITY
PLASMA DENSITY
PLASMA PRODUCTION
PULSES
WAVEGUIDES