title: Numerical experiments on free-electron lasers without inversion.
abstract: The inversionless free-electron laser having a drift region consisting of two magnets is analyzed. Performing numerical simulations of electron motion inside wigglers and the drift region, we have shown that this system has a positive mean gain over the entire energy distribution of the electron beam. We study the influence of emittance and the spread of electron energies on the gain.
authors.affiliation: Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, Texas 77843-4242, USA.
authors.forename: Yuri
authors.initials: Y
authors.lastname: Rostovtsev
authors.forename: Simeon
authors.initials: S
authors.lastname: Trendafilov
authors.forename: Alexander
authors.initials: A
authors.lastname: Artemiev
authors.forename: Kishore
authors.initials: K
authors.lastname: Kapale
authors.forename: Gershon
authors.initials: G
authors.lastname: Kurizki
authors.forename: Marlan O
authors.initials: MO
authors.lastname: Scully