Advection-Induced Spectrotemporal Defects in a Free-Electron Laser

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.034801· OSTI ID:20696451

Bielawski, S; Szwaj, C; Bruni, C; Garzella, D; Orlandi, G L; Couprie, M E ^[1]

---

1. Laboratoire de Physique des Lasers, Atomes et Molecules, UMR CNRS 8523, Centre d'Etudes et de Recherches Lasers et Applications, FR CNRS 2416, Universite des Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex (France)

We evidence numerically and experimentally that advection can induce spectrotemporal defects in a system presenting a localized structure. Those defects in the spectrum are associated with the breakings induced by the drift of the localized solution. The results are based on simulations and experiments performed on the super-ACO free-electron laser. However, we show that this instability can be generalized using a real Ginzburg-Landau equation with (i) advection and (ii) a finite-size supercritical region.

• OSTI ID: 20696451
• Journal Information: Physical Review Letters, Vol. 95, Issue 3; Other Information: DOI: 10.1103/PhysRevLett.95.034801; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADVECTION
EQUATIONS
FREE ELECTRON LASERS
GINZBURG-LANDAU THEORY
SIMULATION