Simultaneous multipoint fiber optic Raman sampling for chemical process control using diode lasers and a CCD detector

S. Michael Angel; Thomas M. Vess; Michael L. Myrick

doi:10.1117/12.56549

1 March 1992 Simultaneous multipoint fiber optic Raman sampling for chemical process control using diode lasers and a CCD detector

S. Michael Angel, Thomas M. Vess, Michael L. Myrick

Author Affiliations +

Proceedings Volume 1587, Chemical, Biochemical, and Environmental Fiber Sensors III; (1992) https://doi.org/10.1117/12.56549
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

A diode-laser-based portable Raman spectrometer is described that uses a 2-dimensional-array detector (charge-coupled device--CCD) to simultaneously measure chemical processes at several remote points using fiber optics. Optical multiplexing with the CCD allows simultaneous measurements with little loss of sensitivity and the low-energy near-visible (NVIS) excitation (e.g., 786 to 820 nm) prevents most sample luminescence. Several fiber- optic sensor configurations optimized for particular applications, including surface-enhanced Raman (SER), are presented. Applications are described including in-situ epoxy cure chemistry monitoring in a curing oven, monitoring a distillation apparatus, and mixed waste monitoring. Some of the limitations of the system are discussed.

Citation Download Citation

S. Michael Angel, Thomas M. Vess, and Michael L. Myrick "Simultaneous multipoint fiber optic Raman sampling for chemical process control using diode lasers and a CCD detector", Proc. SPIE 1587, Chemical, Biochemical, and Environmental Fiber Sensors III, (1 March 1992); https://doi.org/10.1117/12.56549

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