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Molchanov, P. V.

Paper Title Page
TUPPH012 Experimental Study of a Volume Free Electron Laser with a ''Grid'' Resonator 331
 
  • V. G. Baryshevsky, N. A. Belous, A. Gurinovich, A. S. Lobko, P. V. Molchanov, V. I. Stolyarsky
    Belarussian State University, Scientific Research Institute of Nuclear Problems, Minsk
  
  Volume Free Electron Laser (VFEL) uses volume distributed feedback formed by diffraction gratings with different patterns*,**. First lasing of a Volume Free Electron Laser with a ''grid'' resonator, built from periodically strained metallic threads, was observed in***. Structures of this kind are often referred to as photonic crystals. Experiments with ''grid'' VFEL are carried out. Radiation is detected in the frequency range about 10 GHz. Backward wave regime is tested. Dependence of the generation threshold on the resonator length is investigated. It is demonstrated that use of volume resonators of the described type provides to weaken requirements for the electron beam shape and guiding precision. Radiation frequency tuning, which is an advantage of VFEL, can be achieved in such a structure by change of threads tilt to the electron beam velocity.

* V. G.Baryshevsky, K. G. Batrakov, A. A. Gurinovich et al., NIM 483A (2002) 21. ** V. G. Baryshevsky, NIM A 445 (2000) 281. *** V. G. Baryshevsky et.al. LANL e-print archive: physics/0409125