Abstract
We have performed two-photon photoassociation experiments in atomic Bose–Einstein condensate (BEC) of 87Rb with spin degree of freedom which is created by all-optical method with CO2 lasers. The spinor character of the molecules has been revealed by the photoassociation spectrum with a new structure. The hyperfine structure of the molecules near the dissociation limit is identified by observations of the Zeeman and AC-Stark effects of the molecules. The molecules have been spin-selectively probed by the use of the light shift. This result would open the new possibility of research on novel spinor molecular BEC.
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