scholarly journals Hydrodynamic approach to the free electron laser instability

2011 ◽  
Vol 18 (9) ◽  
pp. 093103 ◽  
Author(s):  
Stephan I. Tzenov ◽  
Kiril B. Marinov
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Hydrodynamic Approach ◽  
Laser Instability

A local theory of effect of beam pre-modulation on gain and efficiency in a surface wave pumped free electron laser

2014 ◽  
Vol 32 ◽  
pp. 1460351
Author(s):  
Jyotsna Sharma ◽  
Suresh C. Sharma ◽  
Anuradha Bhasin ◽  
V. K. Jain
Keyword(s):  
Growth Rate ◽  
Surface Wave ◽  
Free Electron ◽  
High Frequency ◽  
Free Electron Laser ◽  
Millimeter Waves ◽  
Local Theory ◽  
Vacuum Region ◽  
Laser Instability ◽  
Frequency Radiation

A pre-modulated relativistic electron beam (REB) counter propagating to the surface wave in the vacuum region Compton backscatters the surface wave into a high frequency radiation. The surface wave extends into the vacuum region and can be employed as a wiggler for the generation of sub-millimeter waves. The growth rate and gain were evaluated for a typical FEL (Free Electron Laser) parameters and It is found that the growth rate and gain of the surface wave pumped free electron laser increases with the modulation index. Moreover, the growth rate of the FEL (Free electron Laser) instability scales as one-third power of the beam density in the Compton regime.

scholarly journals Cross-field free electron laser instability for a tenuous electron beam

1984 ◽  
Vol 27 (1) ◽  
pp. 233 ◽  
Author(s):  
Ronald C. Davidson ◽  
Wayne A. McMullin ◽  
Kang Tsang
Keyword(s):  
Electron Beam ◽  
Free Electron ◽  
Free Electron Laser ◽  
Laser Instability
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