Improving electron beam quality of the Boeing free electron laser

1991 ◽  
Vol 304 (1-3) ◽  
pp. 336-341 ◽  
Author(s):  
D.H. Dowell ◽  
M.L. Laucks ◽  
A.R. Lowrey ◽  
M. Bemes ◽  
A. Currie ◽  
...  
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Beam Quality

Free-electron-laser gain degradation and electron-beam quality

1986 ◽  
Vol 34 (6) ◽  
pp. 4875-4881 ◽  
Author(s):  
W. B. Colson ◽  
J. C. Gallardo ◽  
P. M. Bosco
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Beam Quality ◽  
Laser Gain

scholarly journals Compton and Raman free electron laser stability properties for a cold electron beam propagating through a helical magnetic wiggler

1985 ◽  
Vol 33 (3) ◽  
pp. 387-423 ◽  
Author(s):  
John A. Davies ◽  
Ronald C. Davidson ◽  
George L. Johnston
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Dispersion Relation ◽  
Free Electron ◽  
Free Electron Laser ◽  
Relativistic Electron Beam ◽  
Cold Electron ◽  
Wiggler Magnetic Field ◽  
Laser Stability

This paper gives an extensive characterization of the range of validity of the Compton and Raman approximations to the exact free electron laser dispersion relation for a cold, relativistic electron beam propagating through a constantamplitude helical wiggler magnetic field. The electron beam is treated as infinite in transverse extent. Specific properties of the exact and approximate dispersion relations are investigated analytically and numerically. In particular, a detailed numerical analysis is carried out to determine the range of validity of the Compton approximation.

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

1997 ◽  
Vol 58 (4) ◽  
pp. 613-621 ◽  
Author(s):  
JETENDRA PARASHAR ◽  
H. D. PANDEY ◽  
A. K. SHARMA ◽  
V. K. TRIPATHI
Keyword(s):  
Electron Beam ◽  
Electromagnetic Wave ◽  
Laser Radiation ◽  
Laser Pulse ◽  
Free Electron Laser ◽  
Relativistic Electron Beam ◽  
Plasma Channel ◽  
Beam Quality ◽  
Coherent Radiation ◽  
Millimetre Wave

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.

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