Sub-Doppler laser cooling and magnetic trapping of erbium

We investigate cooling mechanisms in magneto-optically and magnetically trapped erbium. We find efficient sub-Doppler cooling in our trap, which can persist even in large magnetic fields due to the near degeneracy of two Lande g factors. Furthermore, a continuously loaded magnetic trap is demonstrat...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-11, Vol.76 (5), Article 053418
Main Authors: Berglund, Andrew J., Lee, Siu Au, McClelland, Jabez J.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMIC PHYSICS
COLLISIONS
COOLING
COUPLING
ERBIUM
FERMIONS
GASES
LANDE FACTOR
LASER RADIATION
MAGNETIC DIPOLES
MAGNETIC FIELDS
MAGNETO-OPTICAL EFFECTS
SPECTROSCOPY
TEMPERATURE RANGE 0000-0013 K
TRAPPING
TRAPS
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Summary:We investigate cooling mechanisms in magneto-optically and magnetically trapped erbium. We find efficient sub-Doppler cooling in our trap, which can persist even in large magnetic fields due to the near degeneracy of two Lande g factors. Furthermore, a continuously loaded magnetic trap is demonstrated where we observe temperatures below 25 {mu}K. These favorable cooling and trapping properties suggest a number of scientific possibilities for rare-earth-metal atomic physics, including narrow linewidth laser cooling and spectroscopy, unique collision studies, and degenerate bosonic and fermionic gases with long-range magnetic dipole coupling.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.76.053418