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Institute of Optics

bar_yell

Asymmetric resonance fluorescence spectra in partially coherent fields

P. L. Knight, W. A. Molander, and C. R. Stroud, Jr.

Phys. Rev. A 17, 1547 (1978).


A simple physical model is presented which explains the asymmetry recently predicted in the fluorescence spectra from a two-level atom driven slightly off resonance by a partially coherent field. The asymmetry is due to a continuing reinitiation of the transient response of the atom as its dipole moment tries to settle down to a steady-state phase relation with the fluctuating applied field. A Lorentz-model calculation based on this idea is able to give a qualitative explanation of the spectra at all field strengths, and a quantitative explanation of the low-intensity spectra. The predicted spectra are compared with those recently derived by Kimble and Mandel.


Click here to download the .pdf version of the paper knight781.pdf (482 KB)


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Last modified 13 September 2006