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 δν684,sms164162=534±17MHz. Using fluorescence spectroscopy, we measure the excited state lifetime τ684=1.68(5)μs, yielding a linewidth of γ684=95±3kHz. We give an upper limit to the branching ratio between the two decay channels from the excited state showing that this transition is usable for optical pumping into a dark state and demagnetization cooling.

© 2013 Optical Society of America

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