Excitation of terahertz radiation by laser pulses in nonuniform plasma channels

Journal Article · Thu Mar 15 00:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2715864· OSTI ID:20974892

Antonsen, Jr, Thomas M; Palastro, John; Milchberg, Howard M ^[1]

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1. Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742 (United States)

The excitation of terahertz radiation by laser pulses propagating in miniature plasma channels is considered. Generation of radiation by laser pulses in uniform plasmas is generally minimal. However, if one considers propagation in corrugated plasma channels, conditions for radiation generation can be met due to the inhomogeneity of the channel and the presence of guided waves with subluminal phase velocities. It is found that for channels and laser pulses with parameters that can be realized today, energy conversion rates of a fraction of a joule per centimeter can be achieved. Miniature corrugated channels can also be used for creation of THz radiation by bunched electron beams.

• OSTI ID: 20974892
• Journal Information: Physics of Plasmas, Vol. 14, Issue 3; Other Information: DOI: 10.1063/1.2715864; (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
ELECTRON BEAMS
EXCITATION
LASERS
LIGHT TRANSMISSION
PHASE VELOCITY
PLASMA
PULSES