2009/08/18 by Bimalendu Deb, Arpita Rakshit
Physics and Astronomy · #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Quantum optics and atomic interactions #physics.atom-ph
paper · pdf · doi:10.1088/0953-4075/42/19/195202
published as 2009 J. Phys. B: At. Mol. Opt. Phys. 42 195202 · 12 pages, 5 figures
arxiv created 2009/08/18 · openalex publication_date 2009/09/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The photoassociation (PA) spectrum is analysed in the presence of a magnetic Feshbach resonance. A nonperturbative solution of the problem yields analytical expressions for PA linewidth and shift which are applicable for arbitrary PA laser intensity and magnetic field tuning of Feshbach resonance. We show that by tuning the magnetic field close to the Fano minimum, it is possible to suppress power broadening at increased laser intensities. This occurs due to quantum interference of PA transitions from unperturbed and perturbed continuum. Line narrowing at high laser intensities is accompanied by large spectral shifts. We briefly discuss the important consequences of line narrowing in cold collisions.