Two-photon imaging of a magneto-fluorescent indicator for 3D optical magnetometry

We developed an optical method to visualize the three-dimensional distribution of magnetic field strength around magnetic microstructures. We show that the two-photon-excited fluorescence of a chained donor-bridge-acceptor compound, phenanthrene-(CH2)12-O-(CH2)2-N,N-dimethylaniline, is sensitive to...

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Bibliographic Details
Published inOptics express Vol. 23; no. 21; pp. 28022 - 28030
Main Authors Lee, Hohjai, Brinks, Daan, Cohen, Adam E
Format Journal Article
LanguageEnglish
Published United States 19.10.2015
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Summary:We developed an optical method to visualize the three-dimensional distribution of magnetic field strength around magnetic microstructures. We show that the two-photon-excited fluorescence of a chained donor-bridge-acceptor compound, phenanthrene-(CH2)12-O-(CH2)2-N,N-dimethylaniline, is sensitive to ambient magnetic field strength. A test structure is immersed in a solution of the magneto-fluorescent indicator and a custom two-photon microscope maps the fluorescence of this compound. The decay kinetics of the electronic excited state provide a measure of magnetic field that is insensitive to photobleaching, indicator concentration, or local variations in optical excitation or collection efficiency.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.028022