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Physics of Plasmas / Volume 13 / Issue 11 / ARTICLES / Lasers, Particle Beams, Accelerators, Radiation Generation

Phys. Plasmas 13, 113108 (2006); http://dx.doi.org/10.1063/1.2372462 (7 pages)

Conversion of laser radiation to terahertz frequency waves in plasma

N. A. Yampolsky and G. M. Fraiman

Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia, 603950

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(Received 22 February 2006; accepted 2 October 2006; published online 15 November 2006)

A new scheme of terahertz radiation (T-ray) amplification based on four-wave coupling in plasma is proposed. Three stages of the amplification, namely, linear, initial nonlinear, and advanced nonlinear are analyzed. It is shown that (1) during the advanced nonlinear stage, a series of T-ray pulses with fixed energies is generated, and (2) the duration of each pulse decreases during the amplification, while the pulse amplitude grows. Possible parameters of the actual experimental apparatus are also suggested.

© 2006 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. PRINCIPLE AMPLIFICATION SCHEME
  3. THE LINEAR STAGE OF THE AMPLIFICATION
  4. GENERATION OF SHORT POWERFUL T-RAY PULSE FROM A LONG SEED PULSE
  5. EXPERIMENTAL IMPLEMENTATION OF THE AMPLIFICATION SCHEME
  6. CONCLUSION

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KEYWORDS and PACS

Keywords

plasma light propagation, submillimetre waves, plasma nonlinear processes, plasma electrostatic waves

PACS

  • 52.35.Mw

    Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)

  • 42.65.Lm

    Parametric down conversion and production of entangled photons

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2372462

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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