Sun, 27 Jul 2008 08:04:58 BST CiteULike: dhbradshaw's lambda http://www.citeulike.org/user/dhbradshaw/tag/lambda CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dhbradshaw/article/913615 <i>Optics Communications, Vol. 169, No. 1-6. (1 October 1999), pp. 289-299.</i><br /><br />Steady-state dynamics of a Lambda atom driven by two coherent fields is studied for arbitrary detunings, arbitrary incoherent pumping and coherent driving intensities. Effects of a strong probe on EIT are worked out. Features of EIT and LWI are presented in a new physical picture on the basis of the concepts of quantum interference and coherence. In the weak field regime, an absorption-gain profile is the subtraction of two Lorentzians with the same central frequency but different widths and heights. This case is mostly the result of quantum interference and coherence rather than the result of Autler-Townes level splitting. In a strong field regime, however, the profile is the addition of two Lorentzian-like components with different central frequencies but the same width, where Autler-Townes splitting and quantum interference are equally important. LWI in a driven Lambda three-level atom and effects of the probe laser on EIT Bentley Jiaren Liu doi:10.1016/S0030-4018(99)00413-7 Optics Communications, Vol. 169, No. 1-6. (1 October 1999), pp. 289-299. 2006-10-26T14:14:40-00:00 1999 Optics Communications 169 1-6 289 299 density-matrix lambda lwi