Author: Kling, P.
Paper Title Page
TUP003 Quantum FEL II: Many-electron Theory 348
 
  • P. Kling, R. Sauerbrey
    HZDR, Dresden, Germany
  • R. Endrich, E.A. Giese, W.P. Schleich
    Uni Ulm, Ulm, Germany
 
  We investigate the emergence of the quantum regime of the FEL when many electrons interact simultaneously with the wiggler and the laser field. We find the Quantum FEL as the limit where only two momentum states are populated by the electrons. Moreover, we obtain exponential gain-per-pass and start-up from vacuum.  
 
TUP004 Quantum FEL I: Multi-mode Theory 353
 
  • R. Endrich, E.A. Giese, W.P. Schleich
    Uni Ulm, Ulm, Germany
  • P. Kling, R. Sauerbrey
    HZDR, Dresden, Germany
 
  The quantum regime of the FEL in a single-mode, single-particle approximation is characterized by a two-level behaviour of the center-of-mass motion of the electrons. We extend this model to include all modes of the radiation field and analyze the effect of spontaneous emission. In particular, we investigate this scattering mechanism to derive experimental conditions for realizing an FEL in the quantum regime.