Figure 3
From: Standoff pump-probe photothermal detection of hazardous chemicals

(a) QCL spectral profile, (b) Absorption spectrum of nitrobenzene, (c) Normalized absorption of nitrobenzene, and (d) Photothermal spectrum of nitrobenzene.
From: Standoff pump-probe photothermal detection of hazardous chemicals

(a) QCL spectral profile, (b) Absorption spectrum of nitrobenzene, (c) Normalized absorption of nitrobenzene, and (d) Photothermal spectrum of nitrobenzene.