Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3207829
Keywords
coherent antiStokes Raman scattering; laser beams; molecule-photon collisions; nitrogen
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Funding
- Air Force Research Laboratory [FA8650-09-C-2918]
- Air Force Office of Scientific Research
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The feasibility is explored by single-beam coherent anti-Stokes Raman scattering (CARS) spectroscopy of gas-phase diatomic molecules related to combusting flows, with implications for gas-phase thermometry. We demonstrate CARS of gas-phase N-2 using a shaped similar to 7 fs laser pulse, investigate the dependence of the CARS signal on the total pressure of the probed environment, both in pure N-2 and in mixtures with Ar, discuss the observed signal-to-noise ratio, and suggest improvements to be considered for reliable single-shot measurements at flame temperatures.
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