Space and time-resolved optical emission spectroscopy in TEA-CO/sub 2/ laser ablation of polymers and graphite

The luminous plumes from the TEA-CO/sub 2/ laser ablation of polymethylmethacrylate, polyimide, polyethylene terepthalate, and graphite in helium were characterized by using gated optical emission spectroscopy that measured the spatial-temporal distribution of singly ionized carbon species, and also...

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Bibliographic Details
Published inIEEE transactions on plasma science Vol. 33; no. 1; pp. 176 - 182
Main Authors Siew, Wee-Ong, Wong, Kah-Hieng, Yap, Seong-Shan, Tou, Teck-Yong
Format Journal Article
LanguageEnglish
Published IEEE 01.02.2005
Subjects
Carbon dioxide
Curve fitting
Laser ablation
luminous front
Optical propagation
Photography
plume splitting
Polyethylene
Polyimides
shifted Maxwellian distribution
Spectroscopy
Stimulated emission
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Summary:The luminous plumes from the TEA-CO/sub 2/ laser ablation of polymethylmethacrylate, polyimide, polyethylene terepthalate, and graphite in helium were characterized by using gated optical emission spectroscopy that measured the spatial-temporal distribution of singly ionized carbon species, and also by streak photography that examined the dynamics of the propagation of the luminous plumes. The plume splitting was implicated by the fast and slow components of plume species in curve-fitting their spatial-temporal distribution with the shifted Maxwell-Boltzmann distribution function. The best-fit velocities of the fast components were confirmed by the streak photographs.
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ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2004.841801