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arXiv · 1906.05756

In-situ Raman gain between hyperfine ground states in a potassium magneto-optical trap

Graeme Harvie·Adam Butcher·Jon Goldwin
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Abstract

We study optical gain in a gas of cold 39K atoms. The gain is observed during operation of a conventional magneto-optical trap without the need for additional fields. Measurements of transmission spectra from a weak probe show that the gain is due to stimulated Raman scattering between hyperfine ground states. The experimental results are reproduced by a simplified six-level model, which also helps explain why such gain is not observed in similar experiments with rubidium or cesium.

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Graeme Harvie, Adam Butcher, Jon Goldwin. 2019-08-13. In-situ Raman gain between hyperfine ground states in a potassium magneto-optical trap. https://doi.org/10.1103/physreva.100.033408

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