Repumping and spectroscopy of laser-cooled Sr atoms using the (5s5p)3P2 - (5s4d)3D2 transition
P. G. Mickelson, Y. N. Martinez de Escobar, P. Anzel, B. J. DeSalvo,, S. B. Nagel, A. J. Traverso, M. Yan, T. C. Killian
TL;DR
This paper demonstrates repumping and spectroscopy of laser-cooled Sr atoms using a specific transition, enhancing atom numbers in the trap and providing precise isotope shift measurements for multiple Sr isotopes.
Contribution
It introduces a method for repumping Sr atoms via the (5s5p)3P2 - (5s4d)3D2 transition and improves the transition frequency measurement for 88Sr, including isotope shifts.
Findings
Increased atom number in magneto-optical trap through repumping.
Precise measurement of the transition frequency for 88Sr.
Determination of isotope shifts for the transition across four Sr isotopes.
Abstract
We describe repumping and spectroscopy of laser-cooled strontium (Sr) atoms using the (5s5p)3P2 - (5s4d)3D2 transition. Atom number in a magneto-optical trap is enhanced by driving this transition because Sr atoms that have decayed into the (5s5p)3P2 dark state are repumped back into the (5s2)1S0 ground state. Spectroscopy of 84Sr, 86Sr, 87Sr, and 88Sr improves the value of the (5s5p)3P2 - (5s4d)3D2 transition frequency for 88Sr and determines the isotope shifts for the transition.
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