Sep 24 – 30, 2017
La Biodola, Isola d'Elba
Europe/Rome timezone

On the spontaneous emission in quantum free-electron lasers

Sep 27, 2017, 7:30 PM
Parking Area, Hotel Hermitage

Parking Area, Hotel Hermitage

poster WG4 - Applications of Compact and High-Gradient Accelerators Wine and Poster Session 2 (WG4-WG5-WG6-WG7)


Hesham FARES


In this work, we investigate the spontaneous emission process and its detrimental effects on coherent free-electron laser (FEL) emission. In our model, the electron dynamics are described by a discrete Wigner distribution coupled to Maxwell equations. For an FEL operating in the quantum regime of single photon recoil, insights on the variation of momentum distribution, bunching factor, and radiation power are presented. We also derive a simple differential equation that describes the evolution of the radiated power in the linear regime. It is shown that the essential results of this work agree with those predicted by a density matrix approach.

Primary author

Hesham FARES


Gordon R. M. Robb (University of Strathclyde) Nicola Piovella (MI)

Presentation materials