Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering

Adam Hamdorf, Matthew Olson, Cheng Hsiang Lin, Lan Jiang, Jun Zhou, Hai Xiao, Hai Lung Tsai

Research output: Contribution to journalArticle

17 Citations (Scopus)

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 632.8nm excitation wavelength, the surfaceenhanced Raman scattering enhancement factor for Rhodamine 6G was measured up to 2 × 107.

Original languageEnglish (US)
Pages (from-to)3353-3355
Number of pages3
JournalOptics Letters
Volume36
Issue number17
DOIs
StatePublished - Sep 1 2011

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Raman spectra
lasers
nanoparticles
laser machining
augmentation
laser heating
rhodamine
melting
gold
coatings
silicon
thin films
wavelengths
excitation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Hamdorf, A., Olson, M., Lin, C. H., Jiang, L., Zhou, J., Xiao, H., & Tsai, H. L. (2011). Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering. Optics Letters, 36(17), 3353-3355. https://doi.org/10.1364/OL.36.003353
Hamdorf, Adam ; Olson, Matthew ; Lin, Cheng Hsiang ; Jiang, Lan ; Zhou, Jun ; Xiao, Hai ; Tsai, Hai Lung. / Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering. In: Optics Letters. 2011 ; Vol. 36, No. 17. pp. 3353-3355.
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Hamdorf, A, Olson, M, Lin, CH, Jiang, L, Zhou, J, Xiao, H & Tsai, HL 2011, 'Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering', Optics Letters, vol. 36, no. 17, pp. 3353-3355. https://doi.org/10.1364/OL.36.003353

Femtosecond and nanosecond laser fabricated substrate for surface-enhanced Raman scattering. / Hamdorf, Adam; Olson, Matthew; Lin, Cheng Hsiang; Jiang, Lan; Zhou, Jun; Xiao, Hai; Tsai, Hai Lung.

In: Optics Letters, Vol. 36, No. 17, 01.09.2011, p. 3353-3355.

Research output: Contribution to journalArticle

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