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Proceedings Paper

The Dispersive FEL - A Hybrid Optical Klystron-Free Electron Laser
Author(s): C. K. Chen; J. Feinstein; A. Gover; R. H. Pantell
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Paper Abstract

The dispersive free-electron laser (dispersive FEL) is a normal free-electron laser (FEL) with a dispersive magnetic field, similar to that of the optical klystron (OK), superimposed on some of the undulator magnets. Small signal gain, electron energy acceptance bandwidth and saturation efficiency of the normal FEL, OK and dispersive FEL are compared. It is found that for a given electron energy acceptance the dispersive FEL has about a factor of two higher gain than the OK. For a given length, and some non-negligible intrinsic cavity loss, the dispersive FEL has higher saturated output power than the normal FEL. For storage ring operation, where the intrinsic energy bandwidth is small and the length is limited, the dispersive FEL has higher gain than either the conventional FEL or the optical klystron.

Paper Details

Date Published: 16 February 1984
PDF: 6 pages
Proc. SPIE 0453, Free-Electron Generators of Coherent Radiation, (16 February 1984); doi: 10.1117/12.947129
Show Author Affiliations
C. K. Chen, Stanford University (United States)
J. Feinstein, Stanford University (United States)
A. Gover, Stanford University (United States)
R. H. Pantell, Stanford University (United States)


Published in SPIE Proceedings Vol. 0453:
Free-Electron Generators of Coherent Radiation
Charles A. Brau; Stephen F. Jacobs; Marlan O. Scully, Editor(s)

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