Abstract
The pressure and temperature dependence of background-free S-branch CARS spectra of N2 are investigated in the temperature range of 300–700 K for pressures of 1–20 atm. Collisional narrowing for S-branch CARS spectra is proved to be negligible. Individual S-branch lines are clearly resolved in the entire range, enabling unequivocal determination of temperatures by their peak ratios. Advantages and disadvantages of S-branch CARS thermometry are discussed on the basis of experimental results. The dual narrowband Stokes CARS technique is also discussed as a practical method of S-branch CARS thermometry.
© 1990 Optical Society of America
Full Article | PDF ArticleMore Like This
R. L. Farrow, P. L. Mattern, and L. A. Rahn
Appl. Opt. 21(17) 3119-3125 (1982)
Robert J. Hall and Laurence R. Boedeker
Appl. Opt. 23(9) 1340-1346 (1984)
D. R. Snelling, R. A. Sawchuk, and T. Parameswaran
Appl. Opt. 32(36) 7546-7550 (1993)