Surface-enhanced Raman fiber optic sensors for remote monitoring

David L. Stokes; Jean Pierre Alarie; Tuan Vo-Dinh

doi:10.1117/12.224146

9 October 1995 Surface-enhanced Raman fiber optic sensors for remote monitoring

David L. Stokes, Jean Pierre Alarie, Tuan Vo-Dinh

Proceedings Volume 2504, Environmental Monitoring and Hazardous Waste Site Remediation; (1995) https://doi.org/10.1117/12.224146
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

A new sensor design for remote surface-enhanced Raman scattering (SERS) measurements has been developed for environmental applications. The design features the modification of an optical fiber using layers of alumina microparticles and silver coatings for inducing the SERS effect at the sensing probe. A single fiber caries both the laser excitation and the SERS signal radiation, keeping optical parameters at the remote tip simple and consistent. The small tip size achievable with this configuration also demonstrates potential of this new design as a microsensor for in-situ measurement in microenvironments. Details of sensor tip fabrication and optical system design are described. SERS spectra of aqueous environmental samples acquired in-situ using the SERS sensor are also presented to illustrate the effectiveness of the SERS sensor.

Citation Download Citation

David L. Stokes, Jean Pierre Alarie, and Tuan Vo-Dinh "Surface-enhanced Raman fiber optic sensors for remote monitoring", Proc. SPIE 2504, Environmental Monitoring and Hazardous Waste Site Remediation, (9 October 1995); https://doi.org/10.1117/12.224146

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