Collinear FAST CARS for Chemical Mapping of Gases
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Spectroscopy Techniques in Biomedical and Chemical Research · Spectroscopy and Chemometric Analyses · Photoacoustic and Ultrasonic Imaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242, USA
Quantum Optics Laboratory at the Baylor Research and Innovation Collaborative, Baylor University, Waco, TX 76706, USA
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
Funding
Office of Naval Research · Robert A. Welch Foundation · National Science Foundation
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