title: Repeated interaction model for diffusion-induced Ramsey narrowing.
abstract: In a recent paper [Y. Xiao et al., Phys. Rev. Lett. 96, 043601 (2006)] we characterized diffusion-induced Ramsey narrowing as a general phenomenon, in which diffusion of coherence in-and-out of an interaction region such as a laser beam induces spectral narrowing of the associated resonance lineshape. Here we provide a detailed presentation of the repeated interaction model of diffusion-induced Ramsey narrowing, with particular focus on its application to Electromagnetically Induced Transparency (EIT) of atomic vapor in a buffer gas cell. We compare this model both to experimental data and numerical calculations.
authors.affiliation: Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Xiao
authors.forename: Irina
authors.initials: I
authors.lastname: Novikova
authors.forename: David F
authors.initials: DF
authors.lastname: Phillips
authors.forename: Ronald L
authors.initials: RL
authors.lastname: Walsworth
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004058:Diffusion; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*