Coherent interference in multiplex CARS measurements: nonresonant susceptibility enhancement due to laser breakdown
- 15 September 1985
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 24 (18) , 3010-3017
- https://doi.org/10.1364/ao.24.003010
Abstract
A coherent interference with multiplex CARS signals is observed. This effect appears when coal fly ash particles are injected into the combustion flow being probed. The interference has the same spectral characteristics of the Stokes broadband dye laser shifted to anti-Stokes frequencies and is correlated with weak particle-induced laser breakdown. Analysis indicates the phenomenon is due to the enhancement of the nonresonant susceptibility in the small volume of the discharge plasma.Keywords
This publication has 22 references indexed in Scilit:
- Detection of Neutral Species in Silane Plasma Using Coherent Anti-Stokes Raman SpectroscopyJapanese Journal of Applied Physics, 1983
- Broadband single-pulse CARS spectra in a fired internal combustion engineApplied Optics, 1981
- CARS thermometry in practical combustorsCombustion and Flame, 1980
- CARS thermometry in a sooting flameCombustion and Flame, 1979
- Gas breakdown thresholds in flame induced by ruby laserAIAA Journal, 1978
- Nonlinear third-harmonic generation in a plasma by a Gaussian electromagnetic beam: Effect of self-focusingPhysical Review A, 1975
- Effect of impurities on laser-induced air breakdown at 1.06 μOptics Communications, 1975
- Second-Harmonic Generation in an Inhomogeneous Laser-Produced PlasmaPhysical Review Letters, 1975
- High-Power Laser Radiation Interaction with QuartzJournal of Applied Physics, 1970
- Nonlinear optics of many-particle systemsIEEE Journal of Quantum Electronics, 1965