Photothermal nano-cavities for ultra-sensitive chem-bio detection
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Agarwal_Photothermal nano-cavities.pdf
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Author(s)
Hu, Juejun
Musgraves, J. David
Carlie, Nathan
Agarwal, Anuradha Murthy
Richardson, Kathleen
Kimerling, Lionel C.
Date Issued
April 2011
Journal
Proceedings of SPIE--the International Society for Optical Engineering; v.8018
Publisher
SPIE
Citation
Juejun Hu, J. David Musgrave, Nathan Carlie, Anu Agarwal, Kathleen Richardson and Lionel C. Kimerling, "Photothermal nano-cavities for ultra-sensitive chem-bio detection", Proc. SPIE 8018, 80180W (2011); http://dx.doi.org/10.1117/12.883123 © 2011 COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
Version
Final published version
Abstract
Nano-cavity photothermal spectroscopy is a novel technique for ultra-sensitive chem-bio detection. We illustrate that through simultaneous localization of optical and thermal interactions in a planar nano-cavity, detection sensitivity can be improved by > 10[superscript 4] compared to state-of-the-art. Key to nano-cavity photothermal sensing is the use of novel infraredtransparent chalcogenide glasses for resonant cavity fabrication, as these glasses feature a photothermal figure-of-merit over two orders of magnitude higher than conventional materials. We demonstrate planar optical resonant cavity devices in these glasses with record cavity quality factors up to 5 × 10[superscript 5], leading to high photothermal detection sensitivity.
Description
Tuesday 26 April 2011- Orlando, Florida, USA
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XII
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1117/12.883123
