| A single-shot imaging magnetometer using cold atoms. | |
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MedLine Citation:
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PMID: 18711545 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We demonstrate a technique for imaging magnetic fields using velocity-selective two-photon resonances in a cold atom cloud. Freely expanding (85)Rb atoms released from a magneto-optical trap are exposed to a brief (approximately 1 ms), off-resonant, retro-reflected laser pulse in a lin-perp-lin configuration. Two-photon resonance between magnetic sublevels occurs only for atoms in narrow velocity classes dependent on the magnetic field strength. The momentum of resonant atoms is altered by the pulse, and this two-photon momentum change is easily visible after further ballistic expansion. When the momentum pulse is applied to an atom cloud with finite size, magnetic field variations across the sample result in position-dependent features in images of the expanded cloud. We demonstrate the technique by imaging magnetic field variations over approximately 5 mm with approximately 250 microm spatial resolution. |
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Authors:
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Matthew L Terraciano; Mark Bashkansky; Fredrik K Fatemi |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Optics express Volume: 16 ISSN: 1094-4087 ISO Abbreviation: Opt Express Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-08-19 Completed Date: 2008-10-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101137103 Medline TA: Opt Express Country: United States |
Other Details:
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Languages: eng Pagination: 13062-9 Citation Subset: IM |
Affiliation:
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Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Equipment Design Equipment Failure Analysis Magnetics Radiation Dosage Radiometry / instrumentation* Spectrum Analysis, Raman / instrumentation*, methods Transducers* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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