Photoassociative Ionization in Cold Rubidium

Photoassociative Ionization in Cold Rubidium

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Many people in the science community are interested in the prospect of cold molecules for such applications as quantum computing and molecular Bose-Einstein condensates. Current methods of production fall short of the requirements for such projects. Photoassociation is a promising technique for forming cold molecules, but is currently facing significant obstacles. By understanding the photoassociation process and utilizing higher excited states, it is hoped that cold molecules can be formed from more easily produced cold atoms. Photoassociative Ionization (PAI) is presented as a means to study excited state molecular dynamics at large internuclear separation, including photoassociation. This thesis presents a number of techniques for studying PAI in cold rubidium and a number of results obtained with the techniques. Excitation pathways for the process are explored in both narrow linewidth (MHz) and ultrafast (fs), large bandwidth (20 nm) domains.It uses a PI feedback loop and a PZT mirror to stabilize the beam position on a detector. Using two of these circuits stabilizes the beam position in all four degrees of freedom. The circuit diagram in Fig C.5 can be looked at in terms of twoanbsp;...

Title:Photoassociative Ionization in Cold Rubidium
Author:Marc Lawrence Trachy
Publisher:ProQuest - 2008


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