Influence of ambient gas on the temperature and density of laser produced carbon plasma

The effect of ambient gas on the dynamics of the plasma generated by laser ablation of a carbon target using 1.06 μm radiation from a Q-switched Nd:YAG laser has been investigated using a spectroscopic technique. The emission characteristics of the carbon plasma produced in argon, helium and air atm...

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Bibliographic Details
Published in:Applied physics letters 1998-01, Vol.72 (2), p.167-169
Main Authors: Harilal, S. S., Bindhu, C. V., Nampoori, V. P. N., Vallabhan, C. P. G.
Format: Article
Language:English
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Summary:The effect of ambient gas on the dynamics of the plasma generated by laser ablation of a carbon target using 1.06 μm radiation from a Q-switched Nd:YAG laser has been investigated using a spectroscopic technique. The emission characteristics of the carbon plasma produced in argon, helium and air atmospheres are found to depend strongly on the nature and pressure of the surrounding gas. It has been observed that hotter and denser plasmas are formed in an argon atmosphere rather than in helium or air as an ambient.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.120602