Investigations of a two-level atom in a magneto-optical trap using magnesium
2004 (English)In: Journal of Optics B-Quantum and Semiclassical Optics, ISSN 1464-4266, E-ISSN 1741-3575, Vol. 6, no 1, 81-85 p.Article in journal (Refereed) Published
Magnesium atoms are cooled in a magneto-optical trap (MOT) using the 3s(2 1)S(0) --> 3s3p P-1(1) resonance transition. Magnesium is a simple atom which offers a unique possibility for comparison to the Doppler theory of laser cooling. We measure trap parameters as a function of laser-intensity, -detuning and magnetic field gradient. We find the main features well accounted for by Doppler theory, but temperature measurements gave significant higher values than predicted by the Doppler theory. We also observe radiation pressure effects within the MOT that limit the maximum achievable density. Comparing our results to predictions by models in the literature shows a good agreement. Recently we have improved our set-up and now trap about 150 x 10(6) atoms.
Place, publisher, year, edition, pages
2004. Vol. 6, no 1, 81-85 p.
two-electron atoms, two-level atom, cold atoms, laser cooling, Doppler cooling theory, magneto-optical trap, multiple-phonon scattering, neutral atoms, mg atoms, spectroscopy, force, laser, radiation, behavior
IdentifiersURN: urn:nbn:se:kth:diva-23126ISI: 000188587200015OAI: oai:DiVA.org:kth-23126DiVA: diva2:341824
QC 201005252010-08-102010-08-10Bibliographically approved