In this work I describe the excitation spectra of Rydberg atoms in ultracold gases of strontium
and their decay mechanisms. In a few-body regime, we observe a highly structured …

We describe the operation and performance of an ultracold strontium apparatus that is
capable of generating quantum degenerate gases. The experiment has produced Bose …

In the first part of this thesis the measurement of the high power broadening of the ultra
narrow transition 1S0-3P1 to photoassociated calcium molecules is presented. The validity …

Ce mémoire s' inscrit dans le cadre des recherches sur les molécules ultra-froides, en forte
expansion depuis plusieurs années. Contrairement aux atomes, les molécules ne peuvent …