Collinear FAST CARS for Chemical Mapping of Gases

Featured Applicationremote spectroscopic mapping of gas emissions and leaks.AbstractWe examine the concentration dependence of the Coherent Anti-Stokes Raman Scattering (CARS) signal obtained for gas mixtures at various conditions using the Femtosecond Adaptive Spectroscopic Technique (FAST). We use...

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Bibliographic Details
Published in:Applied sciences 2017-07, Vol.7 (7), p.705
Main Authors: Shutov, Anton, Pestov, Dmitry, Altangerel, Narangerel, Yi, Zhenhuan, Wang, Xi, Sokolov, Alexei, Scully, Marlan
Format: Article
Language:English
Subjects:
coherent anti-Stokes Raman scattering (CARS)
Coherent scattering
concentration dependence
Experiments
Fluid dynamics
Gas flow
gas imaging
Gas mixtures
Gases
Lasers
Mapping
optics
Raman scattering
Raman spectra
Raster scanning
Spectroscopy
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Summary:Featured Applicationremote spectroscopic mapping of gas emissions and leaks.AbstractWe examine the concentration dependence of the Coherent Anti-Stokes Raman Scattering (CARS) signal obtained for gas mixtures at various conditions using the Femtosecond Adaptive Spectroscopic Technique (FAST). We use the CARS signal of the Q-branch vibrational oscillation of molecular oxygen (1556 cm−1) to confirm the quadratic dependence of the coherent signal on the number of molecules in a test volume. In addition, we demonstrate multi-shot FAST CARS imaging of a gas flow in free space by raster-scanning the area of interest.
ISSN:2076-3417
2076-3417
DOI:10.3390/app7070705