Electromagnetic-wave-pumped free-electron laser in a plasma channel

An intense short laser pulse or a millimetre wave propagating through a plasma channel may act as a wiggler for the generation of shorter wavelengths. When a relativistic electron beam is launched into the channel from the opposite direction, the laser radiation is Compton/Raman backscattered to pro...

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Bibliographic Details
Published in:Journal of plasma physics 1997-12, Vol.58 (4), p.613-621
Main Authors: PARASHAR, JETENDRA, PANDEY, H. D., SHARMA, A. K., TRIPATHI, V. K.
Format: Article
Language:English
Subjects:
Charged-particle beams
Electromagnetic waves (e.g., electron-cyclotron, whistler, bernstein, upper hybrid, lower hybrid)
Electromagnetic waves (eg, electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid)
Electromagnetism
electron and ion optics
Exact sciences and technology
Free-electron lasers
Fundamental areas of phenomenology (including applications)
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Radiation by moving charges
Relativistic electron and positron beams
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:An intense short laser pulse or a millimetre wave propagating through a plasma channel may act as a wiggler for the generation of shorter wavelengths. When a relativistic electron beam is launched into the channel from the opposite direction, the laser radiation is Compton/Raman backscattered to produce coherent radiation at shorter wavelengths. The scheme, however, requires a superior beam quality with energy spread less than 1% in the Raman regime.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377897005990