2008/04/30 by Meng Khoon Tey, Gleb Maslennikov, T. C. H. Liew +7 · 3 citations
Computer Science · Physics and Astronomy · #Beam (structure) #Cold Atom Physics and Bose-Einstein Condensates #Computational physics #Detector #Extinction (optical mineralogy) #Field (mathematics) #Gaussian #Gaussian beam #Interfacing #Interference (communication) #Lens (geology) #Light scattering #Optics #Orbital Angular Momentum in Optics #Physics #Quantum Information and Cryptography #Quantum mechanics #Scattering #quant-ph
paper · pdf · doi:10.1088/1367-2630/11/4/043011
published as New J. Phys. 11, 043011 (2009) · 22 pages, 7 figures; we provide now a closed solution for field at focus and coupling to single mode optical fibers, and included interference between excitation and scattered light
arxiv created 2009/02/17 · openalex publication_date 2009/04/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We characterize the interaction between a single atom or similar microscopic system and a light field via the scattering ratio. For this, we first derive the electrical field in a strongly focused Gaussian light beam, and then consider the atomic response. Following the simple scattering model, the fraction of scattered optical power for a weak coherent probe field leads to unphysical scattering ratios above 1 in the strong focusing regime. A refined model considering interference between the exciting and scattered field into finite-sized detectors or optical fibers is presented, and compared with experimental extinction measurements for various focusing strengths.