Investigation of sub-Doppler cooling in an ytterbium magneto-optical trap

R. Maruyama, R. H. Wynar, M. V. Romalis, A. Andalkar, M. D. Swallows, C. E. Pearson, E. N. Fortson

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Abstract

The temperature of three isotopes of ytterbium, 174Yb (I=0), 171Yb (I=1/2), and 173Yb (I=5/2) in a magneto-optical trap (MOT) was measured. It was found that an isotope which offers a two-level cooling system, 174Yb, has a significantly higher slope of temperature versus intensity than predicted by Doppler cooling theory. Furthermore, it was observed that the temperature as a function of normalized intensity decreases with higher angular momentum in the ground state, and the dependence is similar to values predicted by 3D simulation and measurements in alkali metals for lin ⊥ lin configuration cooling.

Original languageEnglish (US)
Pages (from-to)011403/1-011403/4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume68
Issue number1
StatePublished - Jul 1 2003

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Maruyama, R., Wynar, R. H., Romalis, M. V., Andalkar, A., Swallows, M. D., Pearson, C. E., & Fortson, E. N. (2003). Investigation of sub-Doppler cooling in an ytterbium magneto-optical trap. Physical Review A - Atomic, Molecular, and Optical Physics, 68(1), 011403/1-011403/4.