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arXiv · 1301.3645

Spectroscopy of a narrow-line optical pumping transition in dysprosium

M. Schmitt·E. A. L. Henn·J. Billy·H. Kadau·T. Maier·A. Griesmaier·T. Pfau
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Abstract

We present measurements of the hyperfine coefficients and isotope shifts of the Dy I $683.731 $nm transition, using saturated absorption spectroscopy on an atomic beam. A King Plot is drawn resulting in an updated value for the specific mass shift $δν_\mathrm{684,sms}^\mathrm{164-162}=-534 \pm 17 MHz$. Using fluorescence spectroscopy we measure the excited state lifetime $τ_{684}=1.68(5) μ$s, yielding a linewidth of $γ_\mathrm{684} = 95 \pm 3 kHz$. We give an upper limit to the branching ratio between the two decay channels from the excited state showing that this transition is useable for optical pumping into a dark state and demagnetization cooling.

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M. Schmitt, E. A. L. Henn, J. Billy, H. Kadau, T. Maier, A. Griesmaier, T. Pfau. 2013-01-16. Spectroscopy of a narrow-line optical pumping transition in dysprosium. https://doi.org/10.1364/ol.38.000637

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