Fiber-lasers for coherent Raman detection of  toxic chemical hazards

N. Coluccelli; A. Gambetta; E. Vicentini; P. Laporta; K. McEwan; C. R. Howle

doi:10.1117/12.2518847

17 May 2019 Fiber-lasers for coherent Raman detection of toxic chemical hazards

N. Coluccelli, A. Gambetta, E. Vicentini, P. Laporta, K. McEwan, C. R. Howle

Proceedings Volume 11010, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX; 1101015 (2019) https://doi.org/10.1117/12.2518847
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

We report on a fiber-format laser system for Fourier-transform coherent anti-Stokes Raman spectroscopy (FT-CARS) of toxic chemical hazards, such as chemical warfare agents (CWAs). The system is based on ytterbium-fiber technology featuring ultra-broad spectral coverage and high-sensitivity. High-quality CARS spectra with maximum Raman shifts of 3000 cm^-1 and signal-to-noise ratio >200 for observation times of 160 μs are measured; a detection limit of one part per thousand is demonstrated with a cyanide/water solution. The system was developed as the basis for a highly accurate, sensitive, reliable and portable device for the real time detection of water contaminants and deposited CWAs at trace levels.

Citation Download Citation

N. Coluccelli, A. Gambetta, E. Vicentini, P. Laporta, K. McEwan, and C. R. Howle "Fiber-lasers for coherent Raman detection of toxic chemical hazards", Proc. SPIE 11010, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX, 1101015 (17 May 2019); https://doi.org/10.1117/12.2518847

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