Sensitivity of collective plasmon modes of gold nanoresonators to local environment
Optics Letters, Vol. 35, Issue 7, pp. 956-958 (2010)
http://dx.doi.org/10.1364/OL.35.000956
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Abstract
We present what we believe to be the first experimental study of the optical response of collective plasmon resonances in regular arrays of nanoresonators to local environment. Recently observed collective plasmon modes arise due to diffractive coupling of localized plasmons and yield almost 1 order of magnitude improvement in resonance quality. We measure the response of these modes to tiny variations of the refractive index of both gaseous and liquid media. We show that the phase sensitivity of the collective resonances can be more than 2 orders of magnitude better than the best amplitude sensitivity of the same nanodot array as well as 1 order of magnitude better than the phase sensitivity in surface plasmon resonance sensors.
© 2010 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(240.6680) Optics at surfaces : Surface plasmons
(290.5850) Scattering : Scattering, particles
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(050.5298) Diffraction and gratings : Photonic crystals
ToC Category:
Diffraction and Gratings
History
Original Manuscript: December 9, 2009
Revised Manuscript: February 15, 2010
Manuscript Accepted: February 21, 2010
Published: March 22, 2010
Virtual Issues
Vol. 5, Iss. 8 Virtual Journal for Biomedical Optics
Citation
V. G. Kravets, F. Schedin, A. V. Kabashin, and A. N. Grigorenko, "Sensitivity of collective plasmon modes of gold nanoresonators to local environment," Opt. Lett. 35, 956-958 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-35-7-956
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