Abstract
Filtered Rayleigh scattering (FRS) is applied to determine two-dimensional temperature distributions in a hexamethyldisiloxane loaded propane/air flame intended for combustion chemical vapor deposition processes. An iodine cell as a molecular filter suppresses background scattering, e.g., by particles, while the wings of the spectrally broadened Rayleigh scattering can pass this filter. A frequency-doubled Nd:YAG laser is tuned to a strong absorption line of iodine. The gas temperature is deduced from the transmitted Rayleigh scattering signal. Since FRS also depends on molecule-specific scattering cross sections, the local gas composition of majority species is measured using the Raman scattering technique. Limits and restrictions are discussed.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Sean P. Kearney, Robert W. Schefer, Steven J. Beresh, and Thomas W. Grasser
Appl. Opt. 44(9) 1548-1558 (2005)
Dieter Most and Alfred Leipertz
Appl. Opt. 40(30) 5379-5387 (2001)
S. Kampmann, A. Leipertz, K. Döbbeling, J. Haumann, and Th. Sattelmayer
Appl. Opt. 32(30) 6167-6172 (1993)