Phys. Rev. A 69, 024501 (2004) [4 pages]Nonlinear-resonance line shapes: Dependence on the transverse intensity distribution of a light beamSee Also: Erratum Received 27 January 2003; revised 2 September 2003; published 26 February 2004 We analyze the line shape and width of atomic coherent-population-trapping (CPT) resonances excited by laser beams with different transverse intensity profiles. A dramatic difference in the resonance line shape is found when comparing a beam with a “steplike” profile to a beam with a Gaussian profile. In particular, for nonuniform profiles, a non-Lorentzian functional form is given that is more appropriate for describing the nonlinear resonance line shape than is a conventional Lorentzian. Our analysis is supported by measurements of CPT line shapes in a thermal vapor of 85Rb. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.024501
DOI:
10.1103/PhysRevA.69.024501
PACS:
32.70.Jz, 42.50.Gy, 42.62.Fi, 32.30.Jc
See AlsoErratum: A. V. Taĭchenachev, A. M. Tumaikin, V. I. Yudin, M. Stähler, R. Wynands, J. Kitching, and L. Hollberg, Erratum: Nonlinear-resonance line shapes: Dependence on the transverse intensity distribution of a light beam [Phy. Rev. A 69, 024501 (2004)], Phys. Rev. A 71, 029903 (2005). |
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