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16 April 2008 Detection of chemicals at a standoff >10 m distance based on single-beam coherent anti-Stokes Raman scattering
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Abstract
The fundamental difficulty of achieving a coherently enhanced sensing method at standoff distances greater than 10 meters has been solved by single-beam coherent anti-Stokes Raman scattering and by actively measuring and eliminating chromatic dispersion experienced by the broad-bandwidth (100 nm) laser pulses. Characteristic Raman spectra for several chemicals in gas, liquid, and solid states, are successfully obtained from a 12 meter standoff distance. The results obtained indicate this is a promising approach to standoff detection of chemicals, hazardous contaminations, and explosives.
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Marcos Dantus, Haowen Li, D. Ahmasi Harris, Bingwei Xu, Paul J. Wrzesinski, and Vadim V. Lozovoy "Detection of chemicals at a standoff >10 m distance based on single-beam coherent anti-Stokes Raman scattering", Proc. SPIE 6954, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing IX, 69540P (16 April 2008); doi: 10.1117/12.777379; https://doi.org/10.1117/12.777379
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