title: Observation of stimulated emission at high gyroharmonics: basis for a synchrotron resonance maser.
abstract: First experimental observations are reported on stimulated coherent synchrotron radiation from highly relativistic electrons in a strong magnetic field. The experiment employed a quasioptical millimeter-wave resonator and a 6-MeV electron beam gyrating in a field of up to 25 kG. Coherent radiation at 54 GHz, corresponding to the 11th gyroharmonic, was observed and characterized. These observations demonstrate the possibility of a synchrotron resonance maser.
authors.affiliation: Physics Department, Yale University, New Haven, Connecticut 06520-8120, USA.
authors.forename: M
authors.initials: M
authors.lastname: Wang
authors.forename: A K
authors.initials: AK
authors.lastname: Ganguly
authors.forename: J L
authors.initials: JL
authors.lastname: Hirshfield