Free-electron lasers with electromagnetic standing wave wigglers

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1987.1073537· OSTI ID:6131370

Tran, T M; Danly, B G; Wurtele, J S

A detailed analysis of the electromagnetic standing wave wiggler for free-electron lasers (FEL's) is conducted for both circular and linear wiggler polarizations, following a single-particle approach. After determination of the unperturbed electron orbits in the wiggler field, the single-particle spontaneous emission spectrum and subsequently the gain in the low gain Compton regime (using the Einstein coefficient method) are explicitly calculated. This analysis results in a clear understanding of the resonance conditions and the coupling strength associated with each resonance of this type of FEL. In particular, a striking feature obtained from this investigation is that the electromagnetic standing wave wiggler FEL, under certain circumstances, exhibits a rich harmonic content. This harmonic content is caused by the presence of both the forward and backward wave components of the standing wave wiggler field. In addition, the nonlinear self-consistent equations for this type of FEL are also presented, permitting further investigation of it by the theoretical techniques and numerical codes developed for conventional FEL's.

• Research Organization: CRPP, Association Euratom-Confederation Suisse, EPFL, CH-1007 Lausanne
• OSTI ID: 6131370
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-23:9; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
BASIC INTERACTIONS
COMPTON EFFECT
COUPLING
EINSTEIN COEFFICIENTS
ELASTIC SCATTERING
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
ELECTRONIC STRUCTURE
EMISSION
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EQUIPMENT
FREE ELECTRON LASERS
GAIN
HARMONICS
INTERACTIONS
LASERS
MAGNETS
NONLINEAR PROBLEMS
OSCILLATIONS
POLARIZATION
RADIATIONS
RESONANCE
SCATTERING
STANDING WAVES
STIMULATED EMISSION
WIGGLER MAGNETS