Generation of multiple coherent pulses in a superradiant free-electron laser

X. Yang, S. Seleskiy, L. Giannessi

Research output: Contribution to conferencePaper

Abstract

We analyze the structure of the tail of a superradiant pulse, which is constituted by a train of trailing-pulses with decaying amplitudes. We show how a trailing pulse, with phase advance from the leading pulse, is generated at the falling edge of the leading pulse, where the corresponding phase space is deeply saturated and the electrons become de-trapped by the reduced ponderomotive potential. Once the trailing pulse gains enough energy, it generates a second trailing pulse, and the process takes place again. By performing detailed simulations of the resulting electron phase space distribution and the FEL pulse spectral and temporal structure with PERSEO, we confirm that the deformation and re-bunching of the longitudinal phase space create a sequence of pulses.
Original languageEnglish
Publication statusPublished - 2014
Externally publishedYes
Event36th International Free Electron Laser Conference, FEL 2014 - Basel, Switzerland
Duration: 1 Jan 2014 → …

Conference

Conference36th International Free Electron Laser Conference, FEL 2014
CountrySwitzerland
CityBasel
Period1/1/14 → …

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Yang, X., Seleskiy, S., & Giannessi, L. (2014). Generation of multiple coherent pulses in a superradiant free-electron laser. Paper presented at 36th International Free Electron Laser Conference, FEL 2014, Basel, Switzerland.