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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 22 — Oct. 22, 2012
  • pp: 24819–24826

Nanopillar array on a fiber facet for highly sensitive surface-enhanced Raman scattering

Xuan Yang, Nazar Ileri, Cindy C. Larson, Thomas C. Carlson, Jerald A. Britten, Allan S. P. Chang, Claire Gu, and Tiziana C. Bond  »View Author Affiliations

Optics Express, Vol. 20, Issue 22, pp. 24819-24826 (2012)

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A highly-sensitive optical fiber surface-enhanced Raman scattering (SERS) sensor has been developed by interference lithography. While one facet of the optical fiber is patterned with silver-coated nanopillar array as a SERS platform, the other end of the probe is used, in a remote end detection, to couple the excitation laser into the fiber and send the SERS signal to the spectrometer. SERS performance of the probe is characterized using trans-1,2-bis(4-pyridyl)-ethylene (BPE) monolayer and an enhancement factor of 1.2 × 107 can be achieved by focusing the laser directly onto the nanopillar array (front end detection). We also demonstrate that this probe can be used for in situ remote sensing of toluene vapor by the remote end detection. Such a fiber SERS probe shows great potential for molecular detection in various sensing applications.

© 2012 OSA

OCIS Codes
(040.1240) Detectors : Arrays
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(300.6450) Spectroscopy : Spectroscopy, Raman
(220.4241) Optical design and fabrication : Nanostructure fabrication
(240.6695) Optics at surfaces : Surface-enhanced Raman scattering

ToC Category:

Original Manuscript: August 21, 2012
Revised Manuscript: October 1, 2012
Manuscript Accepted: October 11, 2012
Published: October 15, 2012

Xuan Yang, Nazar Ileri, Cindy C. Larson, Thomas C. Carlson, Jerald A. Britten, Allan S. P. Chang, Claire Gu, and Tiziana C. Bond, "Nanopillar array on a fiber facet for highly sensitive surface-enhanced Raman scattering," Opt. Express 20, 24819-24826 (2012)

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