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Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering |
Optics Letters, Vol. 36, Issue 17, pp. 3353-3355 (2011)
http://dx.doi.org/10.1364/OL.36.003353
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Abstract
We report a simple and repeatable method for fabricating a large-area substrate for surface-enhanced Raman scattering. The substrate was processed by three steps: (i) femtosecond (fs) laser micromachining and roughening, (ii) thin-film coating, and (iii) nanosecond laser heating and melting. Numerous gold nanoparticles of various sizes were created on the surface of the silicon substrate. The 3D micro-/nanostructures generated by the fs laser provide greater surface areas with more nanoparticles leading to 2 orders of magnitude higher of the enhancement factor than in the case of a flat substrate. Using an He–Ne laser with a
© 2011 Optical Society of America
OCIS Codes
(300.6450) Spectroscopy : Spectroscopy, Raman
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering
ToC Category:
Spectroscopy
History
Original Manuscript: May 31, 2011
Revised Manuscript: July 15, 2011
Manuscript Accepted: July 15, 2011
Published: August 22, 2011
Citation
Adam Hamdorf, Matthew Olson, Cheng-Hsiang Lin, Lan Jiang, Jun Zhou, Hai Xiao, and Hai-Lung Tsai, "Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering," Opt. Lett. 36, 3353-3355 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3353
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