Compact Raman instrumentation for process and environmental monitoring

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Abstract
Raman spectroscopy is a powerful noninvasive tool for elucidating chemical structure. Like infrared spectroscopy, it has many potential practical applications, such as process monitoring, environmental sensing, clinical analysis, forensic identification, and as a detector for use with analytical instruments. Until recently, however, Raman has been considered mainly in the context of basic research. The present generation of high performance Raman instruments tend to be large, complex and expensive, and thus have been of primary interest only to specialists in the field. This paper will discuss the development of a compact Raman spectrometer system consisting of a diode laser, fiber optics of excitation and collection, and a compact spectrograph with charge coupled device (CCD) detection.

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