Open AccessSpatial weak-light ring dark solitons in an electromagnetically induced transparency medium
Author(s) -
Yanchao She,
Wang Deng-Long,
Ding Jian-Wen
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3198
Subject(s) - physics , electromagnetically induced transparency , diffraction , soliton , light beam , light field , optics , coupling (piping) , nonlinear optics , nonlinear system , beam (structure) , nonlinear medium , quantum electrodynamics , quantum mechanics , materials science , metallurgy
By using multiple-scale methodwe analytically study the nonlinear dynamical properties of an electromagnetically induced transparency medium with three-level atoms and a strong coupling light field. It is shown that a weak probe light beam can form spatial weak-light dark solitons. When it propagates along axial directionthe dark soliton will transforms into a steady spatial weak-light ring dark solitonwhich results from the balance of the interplay between beam diffraction and refractive nonlinearity.