Free-Electron Laser Operation and Self-Amplified Spontaneous Emission Using a Step-Tapered Undulator

TitleFree-Electron Laser Operation and Self-Amplified Spontaneous Emission Using a Step-Tapered Undulator
Publication TypeJournal Article
Year of Publication1995
AuthorsD.A Jaroszynski, R. Prazeres, F. Glotin, J.M Ortega, D. Oepts, A.FG van der Meer, G. Knippels, P.W van Amersfoort
JournalNuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Volume358
Number1-3
Pagination228-231
Date PublishedApr 11
ISBN Number0168-9002
Abstract

We present an experimental and theoretical evaluation of a new method of enhancing the efficiency and gain of the free-electron laser (FEL) and observations of self-amplified spontaneous emission at start-up of the step-tapered FEL. The stepped undulator is divided into two uniform sections of different deflection strengths, the upstream K-1 and the downstream K-2, and a step of Delta K = K-2 - K-1 approximate to 0.03 with K-1

DOI10.1016/0168-9002(94)01589-9
PID

a48095dd08406cfb4b5fd47cf4aa1de1

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