Effect of a Matched Electron Beam on High-Gain Free-Electron-Laser Amplifier Performance

H. P. Freund and P. G. O'Shea
Phys. Rev. Lett. 80, 520 – Published 19 January 1998
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Abstract

It is commonly assumed that a matched electron beam optimizes free-electron-laser performance; however, this assumption has not been proven for operation in the high-gain regime. We test this hypothesis for a self-amplified spontaneous emission configuration using a 3D multimode simulation. The gain length predicted for a matched beam is in good agreement with analytic theory. Further, the simulation indicates that while the gain length is optimized for a matched beam the saturated power is not necessarily optimized.

  • Received 27 June 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.520

©1998 American Physical Society

Authors & Affiliations

H. P. Freund

  • Science Applications International Corp., McLean, Virginia 22102

P. G. O'Shea

  • Free-Electron Laser Laboratory, Duke University, Durham, North Carolina 27708

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Vol. 80, Iss. 3 — 19 January 1998

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