Spontaneous emission in a free-electron laser with a discrete taper

Journal Article · Tue Oct 15 00:00:00 EDT 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.335850· OSTI ID:5332672

Becker, W; McIver, J K

Spontaneous emission in a tapered free-electron laser is considered for the case where the magnetic field of the undulator is described by an expression that varies discretely from one half-period to the next. This geometry permits the utilization of the knowledge of the electron trajectories in untapered undulators. The method can be applied for any conceivable configuration of tapered undulators with electrons propagating either on or off axis and yields the spectrum of radiation at arbitrary angles including harmonics. The approach is developed for linear polarization; however, circular polarization may be treated as well.

• Research Organization: Institute for Modern Optics, Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131
• OSTI ID: 5332672
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
EMISSION SPECTRA
FERMIONS
FREE ELECTRON LASERS
GEOMETRY
HARMONICS
LASERS
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MATHEMATICS
OSCILLATIONS
POLARIZATION
RADIATIONS
SPECTRA
TRAJECTORIES