Two-photon imaging of field enhancement by groups of gold nanostrip antennas
JOSA B, Vol. 26, Issue 11, pp. 2199-2203 (2009)
http://dx.doi.org/10.1364/JOSAB.26.002199
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Abstract
Resonant field enhancement by groups of 16 nm thin gold nanostrip antennas consisting of four strips (widths of 70, 100, and 130 nm) and fixed gap (50, 100, 150, or 200 nm) between them and positioned on a quartz substrate is investigated by reflection spectroscopy and two-photon photoluminescence scanning optical microscopy. We obtain good agreement with theoretical calculated reflection spectra and the investigated two-photon intensity dependence on the nanoantenna configurations and parameters of the illumination showed field enhancements increasing with increasing gaps in each group for the p-polarized (resonant) excitation, whereas these enhancement effects were not observed for the s-polarization (nonresonant) excitation.
© 2009 Optical Society of America
OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(290.4210) Scattering : Multiple scattering
ToC Category:
Optics at Surfaces
History
Original Manuscript: August 7, 2009
Manuscript Accepted: September 15, 2009
Published: October 30, 2009
Virtual Issues
Vol. 4, Iss. 13 Virtual Journal for Biomedical Optics
Citation
Sergey M. Novikov, Jonas Beermann, Thomas Søndergaard, Alexandra E. Boltasseva, and Sergey I. Bozhevolnyi, "Two-photon imaging of field enhancement by groups of gold nanostrip antennas," J. Opt. Soc. Am. B 26, 2199-2203 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-26-11-2199
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