• G. Dattoli
  ENEA C.R. Frascati, Frascati (Roma)
• V.B. Asgegar
  University of Pune, Pune

In this paper we show that Cerenkov Free Electron Laser oscillators can be studied using a treatment closely similar to that of the magnetic undulator counterpart. We prove that the saturation dynamics can be modeled by strictly similar formulae and that also for Cerenkov Free Electron Laser the saturation intensity is a quantity of paramount importance. We consider hybrid (undulator and cerenkov) FEL devices and show how they can be exploited to assist the non linear higher order harmonic generation.