2006/11/21 by C. Maes, Carl F. Maes, János K. Asbóth +3
Physics and Astronomy · #Atomic physics #Beam (structure) #Cold Atom Physics and Bose-Einstein Condensates #Laser #Laser linewidth #Optics #Physics #Quantum optics and atomic interactions #Resonance (particle physics) #Resonator #Signal beam #Strong Light-Matter Interactions #quant-ph
paper · pdf · doi:10.1364/oe.15.006019
18 pages 11 figures
arxiv created 2006/11/21 · openalex publication_date 2007/01/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the dynamics of a fast gaseous beam in a high Q ring cavity counter propagating a strong pump laser with large detuning from any particle optical resonance. As spontaneous emission is strongly suppressed the particles can be treated as polarizable point masses forming a dynamic moving mirror. Above a threshold intensity the particles exhibit spatial periodic ordering enhancing collective coherent backscattering which decelerates the beam. Based on a linear stability analysis in their accelerated rest frame we derive analytic bounds for the intensity threshold of this selforganization as a function of particle number, average velocity, kinetic temperature, pump detuning and resonator linewidth. The analytical results agree well with time dependent simulations of the N-particle motion including field damping and spontaneous emission noise. Our results give conditions which may be easily evaluated for stopping and cooling a fast molecular beam.