A compact fiber-laser-based system for detection of biological agents via coherent Raman spectroscopy

N. Coluccelli; P. Laporta; G. Cerullo; K. Curtis; K. McEwan; C. R. Howle

doi:10.1117/12.2590001

12 April 2021 A compact fiber-laser-based system for detection of biological agents via coherent Raman spectroscopy

N. Coluccelli, P. Laporta, G. Cerullo, K. Curtis, K. McEwan, C. R. Howle

Proceedings Volume 11749, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXII; 117490D (2021) https://doi.org/10.1117/12.2590001
Event: SPIE Defense + Commercial Sensing, 2021, Online Only

Abstract

We report on a compact laser system for detection of hazardous biological agents by standoff coherent anti-Stokes Raman spectroscopy (CARS). The system is based on ytterbium-laser technology featuring broad spectral coverage and high sensitivity. High-quality CARS spectra have been obtained for NaDPA powder, a substitute for CaDPA, which is the Raman marker of bacterial spores. In addition, endospores of B. atrophaeus deposited over a glass substrate have been detected by their CARS signature at a standoff distance of 1 m and an integration time of 1 s. The system will be further developed for imaging of bacterial spores deposited over wide surface areas at standoff distances.

Conference Presentation

Citation Download Citation

N. Coluccelli, P. Laporta, G. Cerullo, K. Curtis, K. McEwan, and C. R. Howle "A compact fiber-laser-based system for detection of biological agents via coherent Raman spectroscopy", Proc. SPIE 11749, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXII, 117490D (12 April 2021); https://doi.org/10.1117/12.2590001

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