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Generation of radiation by laser pulses in uniform plasma is generally minimal. However, if one considers propagation in corrugated plasma channels, the condition for radiation generation can be met due to the inhomogeneity of the plasma channel and the presence of guided waves with subluminal phase velocities. For establishing a large amplitude plasma wave driven by moderate-power laser, one has to implement a distributed-feedback structure into the plasma Plasma Wave Oscillator with the feedback matching the plasma resonance. In this note the theoretical analysis for plasma waves driven by moderate-power laser for corrugated waveguide filled with pre-ionized hydrogen plasma has been developed. The growth of amplitude of plasma waves in corrugated structure, coupled to the laser and sideband fields has been investigated. The four coupled equations corresponding to laser field, sideband field and forward and backward plasma waves can be numerically solved for various parameters of the laser field, plasma density, and corrugated structure to arrive at experimental design of the Plasma Wave Oscillator, which may be used for the generation of radiation and particle acceleration.

KEYWORDS

Laser-Plasma Interaction; Generation of Electromagnetic Radiation

Cite this paper

A. Sharma -Proposal for Plasma Wave Oscillator,- Journal of Electromagnetic Analysis and Applications, Vol. 4 No. 10, 2012, pp. 419-422. doi: 10.4236-jemaa.2012.410057.





Author: Ashutosh Sharma

Source: http://www.scirp.org/



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