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Elimination of Background in Fiber-Optic Raman Measurements

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A Novel fiber-optic configuration with forward-scattering light collection is used to measure Raman spectra using long optical fibers with little background interference. This probe design allows control over the sample volume, and measurements can be made at considerable distances from the face of the optrode. The properties of this optical configuration are discussed, as well as its advantages and disadvantages. Normal Raman spectra were measured with this technique, with fibers as long as 100 m. The performance of the probe is not affected by highly scattering solutions. A similar technique was used to measure surface-enhanced Raman spectra on Ag electrodes with 250-m fibers.

Keywords: Fiber optics; Raman; Surface-enhanced Raman

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702904087235

Affiliations: Environmental Sciences Division Lawrence Livermore National Laboratory, Livermore, California 94550

Publication date: May 1, 1990

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