The detection of particles of explosives and related compounds by coherent anti-Stokes Raman scattering (B-CARS) was studied in detail. The B-CARS signal intensity was compared to that of spontaneous Raman scattering and its dependence on the distance between the sample and the detection system was found. Our measurements imply that B-CARS allows favorable detection as compared to Raman. It is estimated that for pulse energies of 10 mJ of the pump and Stokes laser beams, detection of trace amounts of samples from distances of ∼10 to 200 m might be possible applying B-CARS, depending on the species.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy (all)