Switching of the harmonic order in free-electron lasers by controlling the density modulation of an electron bunch

Sei, N.; Ogawa, H.; Jia, Q.

doi:10.1107/S1600577518008937

Journal of Synchrotron Radiation Journal of
Synchrotron Radiation

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Figure 5
Calculated two-dimensional (dispersive gap and bunch current) mapping of the difference between the effective gain of the third harmonic and that of the fundamental. The solid curve represents the threshold condition to switch between the fundamental and third-harmonic FEL oscillations.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 5| September 2018| Pages 1317-1322

https://doi.org/10.1107/S1600577518008937

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