Multicolor Operation and Spectral Control in a Gain-Modulated X-Ray Free-Electron Laser

A. Marinelli, A. A. Lutman, J. Wu, Y. Ding, J. Krzywinski, H.-D. Nuhn, Y. Feng, R. N. Coffee, and C. Pellegrini

Phys. Rev. Lett. 111, 134801 – Published 24 September 2013

Abstract

We show that the spectral properties of a self-amplified spontaneous emission x-ray free-electron laser can be controlled by modulating the gain in magnetic undulators, thus producing one or several spectral lines within a single few femtosecond pulse. By varying the magnetic field along the undulator and the electron beam transport line, the system we demonstrate can tailor the x-ray spectrum to optimally meet numerous experimental requirements for multicolor operation.

Received 9 May 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.134801

Authors & Affiliations

A. Marinelli^1,*, A. A. Lutman¹, J. Wu¹, Y. Ding¹, J. Krzywinski¹, H.-D. Nuhn¹, Y. Feng¹, R. N. Coffee¹, and C. Pellegrini^2,1

¹SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
²Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA

^*Corresponding author. marinelli@slac.stanford.edu

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Vol. 111, Iss. 13 — 27 September 2013

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