8 May 2009 Sensing with mid-infrared frequency combs: a novel modality for ultrasensitive detection of hazardous materials
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Abstract
We propose a new concept for point and stand-off detection of chemical and biological agents as well as explosives' vapors and residues on solid surfaces based on frequency comb spectroscopy in the region of mid-IR molecular vibrational "fingerprints". Our method will allow identification of hazardous substances with high detection sensitivity and real-time data processing. A two-octave-wide mid-infrared frequency comb output will be produced by a cascaded sub-harmonic optical parametric oscillator (OPO) pumped by a fiber laser. The proposed device will use the principle of coherent Fourier-transform infrared spectrometer and offer an unprecedented precision and speed of acquisition of spectral information.
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Konstantin L. Vodopyanov, "Sensing with mid-infrared frequency combs: a novel modality for ultrasensitive detection of hazardous materials", Proc. SPIE 7304, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X, 73040T (8 May 2009); doi: 10.1117/12.820774; https://doi.org/10.1117/12.820774
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