Abstract
The use of a modeless laser as the Stokes source for multiplex coherent anti-Stokes Raman scattering in molecular hydrogen is reported. The elimination of noise associated with mode competition in conventional standing wave lasers is shown to result in reliable and accurate single-shot thermometry of H2 in a microwave-assisted diamond chemical vapor deposition plasma reactor. Single-shot temperatures are recorded with a precision of 7.3%. Possible improvements to this precision are discussed and applications of the technique for on-line process monitoring are briefly presented.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Jae Won Hahn, Chul Woung Park, and Seung Nam Park
Appl. Opt. 36(27) 6722-6728 (1997)
Eric H. van Veen and Dirk Roekaerts
Appl. Opt. 44(32) 6995-7004 (2005)
Hans U. Stauffer, Waruna D. Kulatilaka, Paul S. Hsu, James R. Gord, and Sukesh Roy
Appl. Opt. 50(4) A38-A48 (2011)