Physical processes in lasers

Dependence of the gain of a free-electron laser on the angular and energy scatter of a beam of particles and on nonlinearities of undulator fields

E. G. Bessonov, M. L. Vnukova


Abstract: Numerical calculations are used in an investigation of the influence of the angular and energy scatter of a beam of particles on the gain of a free-electron laser. Approximate analytic expressions convenient in practical use are derived for the gain. The conditions for matching the beam emittance to the undulator acceptance are identified.

UDC: 621.373.826.038.823

PACS: 41.60.Cr, 42.60.Lh, 42.60.Jf

Received: 26.12.1989

 English version: Soviet Journal of Quantum Electronics, 1990, 20:11, 1348–1352

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