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

Jon Goldwin, Graeme Harvie, Adam Butcher

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Abstract

We study optical gain in a gas of cold K39 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.

Original languageEnglish
Article number033408
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume100
Issue number3
DOIs
Publication statusPublished - 9 Sep 2019

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