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Figure-of-merit enhancement of surface plasmon resonance sensors in the spectral interrogation |
Optics Letters, Vol. 37, Issue 7, pp. 1175-1177 (2012)
http://dx.doi.org/10.1364/OL.37.001175
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Abstract
We show that adding a thin dielectric layer with high refractive index on top of the metallic layer in surface plasmon resonance sensors in the Kretschmann–Raether configuration in the spectral mode causes a redshift of the resonance wavelength, narrowing of the resonance dip, and an enhancement to the spectral sensitivity. Surprisingly, together with the sensitivity enhancement, the dip becomes much narrower and the figure of merit is considerably improved, particularly in the IR range.
© 2012 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(280.4788) Remote sensing and sensors : Optical sensing and sensors
ToC Category:
Remote Sensing and Sensors
History
Original Manuscript: January 5, 2012
Revised Manuscript: February 15, 2012
Manuscript Accepted: February 15, 2012
Published: March 23, 2012
Citation
A. Shalabney and I. Abdulhalim, "Figure-of-merit enhancement of surface plasmon resonance sensors in the spectral interrogation," Opt. Lett. 37, 1175-1177 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-7-1175
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