Share Email Print
cover

Proceedings Paper

Investigation of laser ablation of fused and crystal silica and natural silicates induced by pulsed CO2 laser irradiation
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The process of laser ablation of fused and crystal silica and natural silicates induced by pulsed CO2 laser irradiation (total pulse duration of 35 μs, laser pulse rise time of 0.1 μs, pulse energy of 10 J) has been studied. By action of focused laser radiation at the surface of samples the appearance of erosion plume at the irradiated surface take place. For study of ablation regimes the frame image of laser induced plume by use of high speed photography method with 2 microsecond expose of each frame have been made. It has been observed the formation of two different type of laser plume during laser pulse action. First type plume represents a long narrow plume with the onset close to start of laser pulse. The maximal length of this plume is about of 20 millimeter. The second type of plume represents a conical plume with the onset, which is late from laser pulse start for a few microsecond. The first type plume expands in to laser beam direction. The second type plume expands normal to the surface. The velocity of laser plume particles by means of measurements of moment transferred into samples during laser pulse action has been measured. It has been obtained, that value of this velocity varies in region of (l÷3)103 m/s in dependence of laser fluency value. The appearance of first time plume have a threshold which equal to 0.30 kJ/cm2 whereas the appearance of second type plume have not a such threshold and may take place at low laser fluency. We believe, that the first type plume connects with the selective ablation of SimOn complexes whereas second type plume connects with the thermal heating caused by dissipation of laser energy in to system of low frequency acoustics phonons.

Paper Details

Date Published: 9 June 2006
PDF: 6 pages
Proc. SPIE 6053, International Conference on Lasers, Applications, and Technologies 2005: High-Power Lasers and Applications, 60530T (9 June 2006); doi: 10.1117/12.660409
Show Author Affiliations
A. F. Mukhamedgalieva, Moscow States Mining Univ. (Russia)
A. M. Bondar, A.A. Baikov Institute of Metallurgy and Materials Science (Russia)
A. A. Ionin, P.N. Lebedev Physical Institute (Russia)
Yu. M. Klimachev, P.N. Lebedev Physical Institute (Russia)
D. V. Sinitsyn, P.N. Lebedev Physical Institute (Russia)
V. D. Zvorykin, P.N. Lebedev Physical Institute (Russia)


Published in SPIE Proceedings Vol. 6053:
International Conference on Lasers, Applications, and Technologies 2005: High-Power Lasers and Applications
Willy L. Bohn; Vladimir S. Golubev; Andrey A. Ionin; Vladislav Ya. Panchenko, Editor(s)

© SPIE. Terms of Use
Back to Top