Structure, dynamics and optical properties of multicomponent plasma produced near a surface by pulsed CO2 and excimer lasers

Vladimir N. Anisimov; Vladimir Yu. Baranov; V. A. Vorobiev; Oleg N. Derkach; Mikhail F. Kanevskii; Dmitrii D. Malyuta; V. I. Nevmerzhitsky; I. V. Novobrantsev; Andrey Yu. Sebrant; Maria A. Stepanova

doi:10.1117/12.171661

1 April 1994 Structure, dynamics and optical properties of multicomponent plasma produced near a surface by pulsed CO2 and excimer lasers

Vladimir N. Anisimov, Vladimir Yu. Baranov, V. A. Vorobiev, Oleg N. Derkach, Mikhail F. Kanevskii, Dmitrii D. Malyuta, V. I. Nevmerzhitsky, I. V. Novobrantsev, Andrey Yu. Sebrant, Maria A. Stepanova

Author Affiliations +

Proceedings Volume 2257, Russia National Conference: Industrial Lasers and Laser Material Processing; (1994) https://doi.org/10.1117/12.171661
Event: Industrial Lasers and Laser Material Processing: Russian National Conference, 1993, Shatura, Moscow Region, Russian Federation

Abstract

Results of the experimental studies of dynamics and optical properties of laser-induced plasmas are presented. Lasers with microsecond pulse width at (lambda) equals 0.308 and 10.6 micrometers were used. Spatially and temporally resolved plasma emission spectroscopy and laser beam absorption measurements were used to reveal plasma plume structure. It has been shown that in the case of low absorption at the plasma front, a two component plasma is formed with gas plasma temperature above 3 eV and electron number density in both gas and target vapor plasma in the range 10¹⁸ - 3 (DOT) 10¹⁹ cm^-3. Comparison of the experimental data with computer model predictions is presented.

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Vladimir N. Anisimov, Vladimir Yu. Baranov, V. A. Vorobiev, Oleg N. Derkach, Mikhail F. Kanevskii, Dmitrii D. Malyuta, V. I. Nevmerzhitsky, I. V. Novobrantsev, Andrey Yu. Sebrant, and Maria A. Stepanova "Structure, dynamics and optical properties of multicomponent plasma produced near a surface by pulsed CO2 and excimer lasers", Proc. SPIE 2257, Russia National Conference: Industrial Lasers and Laser Material Processing, (1 April 1994); https://doi.org/10.1117/12.171661

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