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arXiv · 0905.1204

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

Paul Siddons·Charles S Adams·Ifan G Hughes
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Abstract

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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Paul Siddons, Charles S Adams, Ifan G Hughes. 2009-05-08. Off-resonance absorption and dispersion in a Doppler-broadened medium. https://doi.org/10.1088/0953-4075/42/17/175004

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