Developing Raman spectroscopy for in-situ determinations

Thomas J. Vickers; Charles K. Mann

doi:10.1117/12.140274

9 March 1993 Developing Raman spectroscopy for in-situ determinations

Thomas J. Vickers, Charles K. Mann

Proceedings Volume 1716, International Conference on Monitoring of Toxic Chemicals and Biomarkers; (1993) https://doi.org/10.1117/12.140274
Event: Environmental Sensing '92, 1992, Berlin, Germany

Abstract

Raman spectroscopy produces highly characteristic responses from all molecular species. It uses ultraviolet, visible or near-infrared radiation and thus is well suited for use with relatively inexpensive low-loss fiber optics. Because it is a scattering measurement it is readily applied to samples in a variety of forms, including aqueous solutions, solids and slurries, and to samples in hostile environments. This report will discuss how concerns relating to sensitivity and reproducibility have been addressed by selection of appropriate instrumentation and data treatment strategies. Recent results with a fiber optic based system for a variety of samples with significant implications for in situ monitoring applications will be described. Problems relating to representative sampling of nonuniform materials have also been addressed, and results obtained with a novel Hadamard transform approach to obtain energy throughput and spatial averaging advantage will be described.

Citation Download Citation

Thomas J. Vickers and Charles K. Mann "Developing Raman spectroscopy for in-situ determinations", Proc. SPIE 1716, International Conference on Monitoring of Toxic Chemicals and Biomarkers, (9 March 1993); https://doi.org/10.1117/12.140274

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