Quantum noise limited nanoparticle detection with exposed-core fiber
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(Published version)
Date
2019
Authors
Mauranyapin, N.P.
Madsen, L.S.
Booth, L.
Peng, L.
Warren-Smith, S.C.
Schartner, E.P.
Ebendorff-Heidepriem, H.
Bowen, W.P.
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Journal article
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Optics Express, 2019; 27(13):18601-18611
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Nicolas P. Mauranyapin, Lars S. Madsen, Larnii Booth, Lu Peng, Stephen C. Warren-Smith, Erik P. Schartner, Heike Ebendorff-Heidepriem and Warwick P. Bowen
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Abstract
Label-free biosensors are important tools for clinical diagnostics and for studying biology at the single molecule level. The development of optical label-free sensors has allowed extreme sensitivity but can expose the biological sample to photodamage. Moreover, the fragility and complexity of these sensors can be prohibitive to applications. To overcome these problems, we develop a quantum noise limited exposed-core fiber sensor providing robust platform for label-free biosensing with a natural path toward microfluidic integration. We demonstrate the detection of single nanoparticles down to 25 nm in radius with optical intensities beneath known biophysical damage thresholds.
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© 2019 Optical Society of America under the terms of the OSA Open Access Publishing