A method for realization of the regime of nonresonant electron trapping in an oscillator scheme of the cyclotron autoresonance maser (CARM) is proposed and theoretically studied. A possibility to achieve simultaneously a high electron efficiency and very weak sensitivity to the electron-beam quality is demonstrated for a moderately-relativistic millimeter-wavelength CARM.
- cyclotron masers
- electron traps
- millimetre wave power amplifiers