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Proceedings Paper

Fiber optic SERS sensor for environmental monitoring
Author(s): David L. Stokes; Jean Pierre Alarie; V. Ananthanarayanan; Tuan Vo-Dinh
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Paper Abstract

The development of fiberoptic sensors for remote in-situ environmental monitoring using surface-enhanced Raman scattering (SERS) is described. The approach to sensor development includes the initial development of SERS-active media on nanoparticle-based solid-surface substrates. These media are generally metal-coated nanoparticles that can be further modified for enhanced chemical selectivity, longevity and ruggedness. One example of surface modification is the application of a permeability-selective polymer, polyvinyl pyrrolidone (PVP). For remote environmental sensing applications, the planar solid SERS substrates have been successfully incorporated in a two-fiber probe design. We have also applied SERS-active media directly to an optical fiber as an integrated single-fiber design. Such sensors occupy much less volume and promote non intrusive monitoring systems. Linear response of the integrated sensor monitoring systems for various environmental chemicals with excellent correlation (greater than 0.99) has been observed in the part-per-billion (ppb) range.

Paper Details

Date Published: 10 February 1999
PDF: 8 pages
Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999); doi: 10.1117/12.339047
Show Author Affiliations
David L. Stokes, Oak Ridge National Lab. (United States)
Jean Pierre Alarie, Oak Ridge National Lab. (United States)
V. Ananthanarayanan, Oak Ridge National Lab. (United States)
Tuan Vo-Dinh, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 3534:
Environmental Monitoring and Remediation Technologies
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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