Table of Contents
Research Letters in Physics
Volume 2008, Article ID 592869, 5 pages
Research Letter

Physics of Superpulses in Storage Ring Free-Electron Lasers

Collider-Accelerator Department, Brookhaven National Laboratory, Building 911, P.O. Box 5000, Upton, NY 11973, USA

Received 11 November 2007; Accepted 14 January 2008

Academic Editor: Warren B. Mori

Copyright © 2008 Vladimir N. Litvinenko. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Contradictory to the widespread perception, storage ring free-electron lasers with substantial net gain can generate peak lasing power reaching GW levels in the so-called superpulse mode. This power level is sufficient for studies of nonlinear processes and efficient intracavity harmonic generation. This letter describes the physics of the superpulses and a phase-space refreshment in the electron beam responsible for this phenomenon.