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Proceedings Paper

Application of degenerate four-wave mixing laser spectroscopy and laser Thomson scattering to studies of thermal argon plasma
Author(s): B. Pokrzywka; K. Dzierzega; W. Zawadzki; K. Musiol; S. Pellerin
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Paper Abstract

We investigated laser-based spectroscopic techniques: phase-conjugate degenerate four-wave mixing (PC-DFWM) and laser Thomson scattering (LTS) in terms of their application to Stark profile studies in thermal plasma. PC-DFWM was used for the Stark profile determination while LTS served for plasma diagnostic purpose. Experiments were performed for thermal plasma generated in the transferred arc and burning in pure argon at atmospheric pressure. The spectral profile of the 696.543 nm ArI line was studied. Our attention was paid to the problem of the laser power influence on the measured quantities and plasma state. In the case of PC-DFWM the influence of the laser power manifests itself as broadening of the line profile that can be corrected by a simple extrapolation of the results to the zero laser intensity. On the other hand the results of the Thomson scattering show strong dependence of the electron temperature on the laser intensity and its variations during the laser pulse.

Paper Details

Date Published: 1 June 2005
PDF: 6 pages
Proc. SPIE 5849, Fifth Workshop on Atomic and Molecular Physics, (1 June 2005); doi: 10.1117/12.629467
Show Author Affiliations
B. Pokrzywka, Cracow Pedagogical Univ. (Poland)
K. Dzierzega, Jagellonian Univ. (Poland)
W. Zawadzki, Jagellonian Univ. (Poland)
K. Musiol, Jagellonian Univ. (Poland)
S. Pellerin, LASEP, Univ. d'Orleans (France)


Published in SPIE Proceedings Vol. 5849:
Fifth Workshop on Atomic and Molecular Physics

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