Measurements of optical Feshbach resonances of Yb 174 atoms

Abstract

We present measurements of the optical Feshbach resonances (OFRs) of Yb174 atoms for the intercombination transition. We measure the photoassociation (PA) spectra of a pure Yb174 Bose-Einstein condensate (BEC) and determine the dependence of OFRs on PA laser intensities and frequencies for four least-bound vibrational levels near the intercombination transition. We confirm that our measurements are consistent with the temporal decay of a BEC subjected to a PA beam in the vicinity of the fourth vibrational level from the dissociation limit. © 2016 American Physical Society