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arXiv · 1206.0999

Velocity-selective direct frequency-comb spectroscopy of atomic vapors

J. E. Stalnaker·S. L. Chen·M. E. Rowan·K. Nguyen·T. Pradhananga·C. A. Palm·D. F. Jackson Kimball
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Abstract

We present an experimental and theoretical investigation of two-photon direct frequency-comb spectroscopy performed through velocity-selective excitation. In particular, we explore the effect of repetition rate on the $\textrm{5S}_{1/2}\rightarrow \textrm{5D}_{3/2, 5/2}$ two-photon transitions excited in a rubidium atomic vapor cell. The transitions occur via step-wise excitation through the $\textrm{5P}_{1/2, 3/2}$ states by use of the direct output of an optical frequency comb. Experiments were performed with two different frequency combs, one with a repetition rate of $\approx 925$ MHz and one with a repetition rate of $\approx 250$ MHz. The experimental spectra are compared to each other and to a theoretical model.

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J. E. Stalnaker, S. L. Chen, M. E. Rowan, K. Nguyen, T. Pradhananga, C. A. Palm, D. F. Jackson Kimball. 2012-06-05. Velocity-selective direct frequency-comb spectroscopy of atomic vapors. https://doi.org/10.1103/physreva.86.033832

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