TY - JOUR
T1 - In situ Raman gain between hyperfine ground states in a potassium magneto-optical trap
AU - Goldwin, Jon
AU - Harvie, Graeme
AU - Butcher, Adam
PY - 2019/9/9
Y1 - 2019/9/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85072631825&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.100.033408
DO - 10.1103/PhysRevA.100.033408
M3 - Article
SN - 2469-9926
VL - 100
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 033408
ER -