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Characterization of localized field enhancements in laser fabricated gold needle nanostructures |
JOSA B, Vol. 29, Issue 1, pp. 185-190 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000185
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Abstract
Field intensity enhancements (FEs) produced by gold needle nanostructures,
namely, standing upright sharp and sphere-terminated needles, fabricated on a
gold substrate by femtosecond laser irradiation, are investigated and
characterized using linear reflection spectroscopy, two-photon photoluminescence
(TPL) scanning optical microscopy, and high-resolution confocal Raman
microscopy. Surface enhanced Raman scattering (SERS) is observed using linearly
polarized 532 nm excitation of Rhodamine 6G homogeneously adsorbed on the
structures. The obtained high-resolution TPL and Raman images both indicate a
relatively high FE level of
© 2012 Optical Society of America
OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(190.0190) Nonlinear optics : Nonlinear optics
(240.6680) Optics at surfaces : Surface plasmons
(290.0290) Scattering : Scattering
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering
ToC Category:
Optics at Surfaces
History
Original Manuscript: August 2, 2011
Revised Manuscript: October 12, 2011
Manuscript Accepted: November 1, 2011
Published: December 22, 2011
Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Sergey M. Novikov, Andrey B. Evlyukhin, Arseniy I. Kuznetsov, Jonas Beermann, Boris N. Chichkov, and Sergey I. Bozhevolnyi, "Characterization of localized field enhancements in laser fabricated gold needle nanostructures," J. Opt. Soc. Am. B 29, 185-190 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-1-185
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