Tapered optical fibers as tools for probing magneto-optical trap characteristics

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dc.contributor.authorMorrissey, Michael J.
dc.contributor.authorDeasy, Kieran
dc.contributor.authorWu, Yuqiang
dc.contributor.authorChakrabarti, Shrabana
dc.contributor.authorNic Chormaic, Síle
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderIrish Research Council for Science Engineering and Technologyen
dc.date.accessioned2011-02-28T13:16:08Z
dc.date.available2011-02-28T13:16:08Z
dc.date.copyright2009
dc.date.issued2009-05-01
dc.date.updated2010-10-12T09:57:14Z
dc.description.abstractWe present a novel technique for measuring the characteristics of a magneto-optical trap (MOT) for cold atoms by monitoring the spontaneous emission from trapped atoms coupled into the guided mode of a tapered optical nanofiber. We show that the nanofiber is highly sensitive to very small numbers of atoms close to its surface. The size and shape of the MOT, determined by translating the cold atom cloud across the tapered fiber, is in excellent agreement with measurements obtained using the conventional method of fluorescence imaging using a charge coupled device camera. The coupling of atomic fluorescence into the tapered fiber also allows us to monitor the loading and lifetime of the trap. The results are compared to those achieved by focusing the MOT fluorescence onto a photodiode and it was seen that the tapered fiber gives slightly longer loading and lifetime measurements due to the sensitivity of the fiber, even when very few atoms are present.en
dc.description.sponsorshipScience Foundation Ireland (Grant Nos. 02/IN1/128 and 07/RFP/PHYF518); IRCSET (Embark Initiative)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMorrissey, M.J., Deasy, K., Wu, Y., Chakrabarti, S., Nic Chormaic, S., 2009. Tapered optical fibers as tools for probing magneto-optical trap characteristics. Review of Scientific Instruments, 80(5), pp.053102-1 - 053102-5en
dc.identifier.doi10.1063/1.3117201
dc.identifier.endpage053102-5en
dc.identifier.issued5en
dc.identifier.journaltitleReview of Scientific Instrumentsen
dc.identifier.startpage053102-1en
dc.identifier.urihttps://hdl.handle.net/10468/233
dc.identifier.volume80en
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.urihttp://link.aip.org/link/doi/10.1063/1.3117201
dc.rights© 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Morrissey, M.J., Deasy, K., Wu, Y., Chakrabarti, S., Nic Chormaic, S., 2009. Tapered optical fibers as tools for probing magneto-optical trap characteristics. Review of Scientific Instruments, 80(5), pp.053102-1 - 053102-5 and may be found at http://link.aip.org/link/doi/10.1063/1.3117201en
dc.rights.urihttp://rsi.aip.org/about/rights_and_permissionsen
dc.subjectAtom-photon collisionsen
dc.subjectFibre optic sensorsen
dc.subjectLaser coolingen
dc.subjectMagneto-optical effectsen
dc.subjectSpontaneous emissionen
dc.subject.lcshFluorescenceen
dc.subject.lcshNanophotonicsen
dc.subject.lcshPhotodiodesen
dc.subject.lcshRadiation pressureen
dc.titleTapered optical fibers as tools for probing magneto-optical trap characteristicsen
dc.typeArticle (peer-reviewed)en
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