Collinear FAST CARS for Chemical Mapping of Gases
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2017 by the authors. We 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.
author list (cited authors)
Shutov, A., Pestov, D., Altangerel, N., Yi, Z., Wang, X. i., Sokolov, A. V., & Scully, M. O.
complete list of authors
Shutov, Anton||Pestov, Dmitry||Altangerel, Narangerel||Yi, Zhenhuan||Wang, Xi||Sokolov, Alexei V||Scully, Marlan O