Off-resonance absorption and dispersion in a Doppler-broadened medium

Details Off-resonance absorption and dispersion in a Doppler-broadened medium Off-resonance absorption and dispersion in a Doppler-broadened medium

2009-05-08

arxiv.org/abs/0905.1204v1

J. Phys. B: At. Mol. Opt. Phys. 42 175004 (2009)

Physics

Atomic Physics

9 pages, 4 figures

Scientific paper

10.1088/0953-4075/42/17/175004

We study the absorptive and dispersive properties of Doppler-broadened atomic media as a function of detuning. Beginning from the exact lineshape calculated for a two-level atom, a series of approximations to the electric susceptibility are made. These simplified functions facilitate direct comparison between absorption and dispersion, and show that dispersion dominates the atom-light interaction far from resonance. The calculated absorption and dispersion are compared to experimental data, showing the validity of the approximations.

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