Cars diagnostic investigations of flames
Coherent anti-Stokes Raman spectroscopy (CARS) investigations in a variety of flames are presented. Thermometry has received the primary emphasis in the research to be reported, but some species sensitivity studies will be described as well. CARS is generated by mixing a 10 pps, frequency-doubled neodymium pump laser with a spectrally broadband, laser-pumped, Stokes dye laser. This approach obviates the requirement to frequency scan the dye laser and generates the entire CARS spectrum with each pulse permitting instantaneous measurements of medium properties. A crossed-beam, phase-matching technique termed BOXCARS is described which leads to greatly enhanced and unambiguous spatial resolution in contrast to the conventionlly employed collinear phase-matching approaches.
- Research Organization:
- United Technologies Research Center, East Hartford, CT
- OSTI ID:
- 6878672
- Report Number(s):
- NBS-SP-561(Vol.2); CONF-780941-(Vol.2)
- Journal Information:
- Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States), Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Vol. 2:561; ISSN XNBSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400104 -- Spectral Procedures-- (-1987)
640300* -- Atomic
Molecular & Chemical Physics
74 ATOMIC AND MOLECULAR PHYSICS
COHERENT RADIATION
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
FLAMES
MEASURING METHODS
RADIATIONS
RAMAN SPECTRA
SPECTRA
STOKES PARAMETERS