Line shapes of optical Feshbach resonances near the intercombination transition of bosonic Ytterbium

2009/05/07 by M. Borkowski, R. Ciurylo, Borkowski, M. +9 · 1 citation
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #physics.atom-ph

paper · pdf · doi:10.48550/arxiv.0905.0958

arxiv created 2009/05/07 · arxiv updated 2009/12/01

Abstract

The properties of bosonic Ytterbium photoassociation spectra near the intercombination transition ¹S₀--³P₁ are studied theoretically at ultra low temperatures. We demonstrate how the shapes and intensities of rotational components of optical Feshbach resonances are affected by mass tuning of the scattering properties of the two colliding ground state atoms. Particular attention is given to the relationship between the magnitude of the scattering length and the occurrence of shape resonances in higher partial waves of the van der Waals system. We develop a mass scaled model of the excited state potential that represents the experimental data for different isotopes. The shape of the rotational photoassociation spectrum for various bosonic Yb isotopes can be qualitatively different.

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