Tunable polarization plasma channel undulator for narrow bandwidth photon emission

S. G. Rykovanov, J. W. Wang, V. Yu Kharin, B. Lei, C. B. Schroeder, C. G.R. Geddes, E. Esarey, W. P. Leemans

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The theory of a plasma undulator excited by a short intense laser pulse in a parabolic plasma channel is presented. The undulator fields are generated either by the laser pulse incident off-axis and/or under the angle with respect to the channel axis. Linear plasma theory is used to derive the wakefield structure. It is shown that the electrons injected into the plasma wakefields experience betatron motion and undulator oscillations. Optimal electron beam injection conditions are derived for minimizing the amplitude of the betatron motion, producing narrow-bandwidth undulator radiation. Polarization control is readily achieved by varying the laser pulse injection conditions.

Original languageEnglish
Article number090703
JournalPhysical Review Accelerators and Beams
Issue number9
Publication statusPublished - 1 Sep 2016
Externally publishedYes


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