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Two-color magneto-optical trap with small magnetic field for ytterbium

Author(s)
Kawasaki, Akio; Braverman, Boris; Yu, QinQin; Vuletic, Vladan
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Abstract
We report a two-color magneto-optical trap (MOT) for ytterbium atoms where the slowing and trapping functions are separately performed by the singlet transition light (6s[superscript 2] [superscript 1]S[subscript 0] → 6s6p [superscript 1]P[subscript 1]) and the triplet transition light (6s[superscript 2] [superscript 1]S[subscript 0] → 6s6p [superscript 3]P[subscript 1]), respectively. The two-color MOT is achieved by simultaneously applying laser light on both the broad-linewidth singlet transition and the narrow-linewidth triplet transition. It is highly robust against laser power imbalance even at very low magnetic field gradients, and can operate at magnetic field gradients down to 2 G cm[superscript −1] where a conventional MOT using the singlet transition is unable to trap atoms. We load and trap up to 4.0 × 10[superscript 5] atoms directly from an atomic beam at 700 K.
Date issued
2015-06
URI
http://hdl.handle.net/1721.1/98468
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of Physics B: Atomic, Molecular and Optical Physics
Publisher
IOP Publishing
Citation
Kawasaki, Akio, Boris Braverman, QinQin Yu, and Vladan Vuletic. “Two-Color Magneto-Optical Trap with Small Magnetic Field for Ytterbium.” Journal of Physics B: Atomic, Molecular and Optical Physics 48, no. 15 (June 26, 2015): 155302.
Version: Original manuscript
ISSN
0953-4075
1361-6455

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