Optical control of collision dynamics in a metastable neon magneto-optical trap

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Title Optical control of collision dynamics in a metastable neon magneto-optical trap
Author Glover, Rohan David; Calvert, James Edward; Laban, Dane Edward; Sang, Robert
Journal Name Journal of Physics B: Atomic, Molecular and Optical Physics
Year Published 2011
Place of publication United Kingdom
Publisher IOP Publishing
Abstract We present results for controlled optical collisions of cold, metastable Ne atoms in a magneto-optical trap. The modification of the ionizing collision rate is demonstrated using a control laser tuned close to the (3s)3P2 to (3p)3D3 cooling transition. The measured ionization spectrum does not contain resonances due to the formation of photoassociated molecules connected to the omega = 5 excited state potential as predicted by Doery et al (1998 Phys. Rev. A 57 3603–20). Instead, we observe a broad unresolvable ionization spectrum that is well described by established theory (Gallagher and Pritchard 1989 Phys. Rev. Lett. 63 957). In order to induce collisions between pairs of trapped metastables, a control laser is tuned to the red of the transition where we measure a factor of 4 increase in the rate for ionizing collisions. We also investigate the effect of optical shielding by tuning the laser to the blue of the transition and observe a factor of 5 suppression in the ionization rate.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1088/0953-4075/44/24/245202
Volume 44
Page from 1
Page to 8
ISSN 0953-4075
Date Accessioned 2011-12-01; 2012-02-15T04:43:19Z
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Atomic and Molecular Physics
URI http://hdl.handle.net/10072/42670
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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