Journal
OPTICS EXPRESS
Volume 19, Issue 16, Pages 15041-15046Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.015041
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Funding
- Natural Science and Engineering Research Council of Canada
- Canadian Institute for Photonics Innovations
- NSERC Strategic Network for Bioplasmonic Systems (Biopsys)
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We show high resolution measurements of a surface plasmon resonance (SPR) sensor based on a rectangular nanohole array in a metal film. This SPR setup uses balanced intensity detection between two orthogonal polarizations of a He-Ne laser beam, which allows for sensitivity improvement, noise reduction and rejection of any uncorrelated variation in the intensity signal. A bulk sensitivity resolution of 6.4x10(-6) RIU is demonstrated. The proposed methodology is promising for applications in portable nanoplasmonic multisensing and imaging. (C) 2011 Optical Society of America
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