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Repeated measurements with minimally destructive partial-transfer absorption imaging

TitleRepeated measurements with minimally destructive partial-transfer absorption imaging
Publication TypeJournal Article
Year of Publication2019
AuthorsE. Marshall Seroka, A. Valdes Curiel, D. Trypogeorgos, N. Lundblad, and I. B. Spielman
JournalOpt. Express
Volume27
Pagination36611-36624
Date PublishedDEC 9
Type of ArticleArticle
ISSN1094-4087
Abstract

We demonstrate partial-transfer absorption imaging as a technique for repeatedly imaging an ultracold atomic ensemble with minimal perturbation. We prepare an atomic cloud in a state that is dark to the imaging light. We then use a microwave pulse to coherently transfer a small fraction of the ensemble to a bright state, which we image using in situ absorption imaging. The amplitude or duration of the microwave pulse controls the fractional transfer from the dark to the bright state. For small transfer fractions, we can image the atomic cloud up to 50 times before it is depleted. As a sample application, we repeatedly image an atomic cloud oscillating in a dipole trap to measure the trap frequency. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

DOI10.1364/OE.27.036611