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Proceedings Paper

Interferometric study of the laser-induced melting stage of an absorbing glass
Author(s): Constantin P. Cristescu; Alexandru M. Preda; Eugen Nicolae Scarlat
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Paper Abstract

We study the processes of glass heating and melting by absorption of laser radiation using profilometry in reflected light and interferometric real time analysis. The sample irradiation is obtained by an argon ion laser and the interference pattern is generated by a He-Ne laser or by another argon ion laser. In the reflected beam we observe a change of the ring pattern caused by the increasing of pumping power. Above a certain level an additional ring pattern appears. We study the dependence of the structure of the ring patterns as function of the power of the pumping laser beam. From the diffraction pattern and the interference pattern given by a wedge shearing interferometer we estimate the shape and dimension of the mound and respectively the dimple generated for different pumping powers.

Paper Details

Date Published: 9 August 2002
PDF: 8 pages
Proc. SPIE 4762, ALT'01 International Conference on Advanced Laser Technologies, (9 August 2002); doi: 10.1117/12.478623
Show Author Affiliations
Constantin P. Cristescu, Univ. Politehnica of Bucharest (Romania)
Alexandru M. Preda, Univ. Politehnica of Bucharest (Romania)
Eugen Nicolae Scarlat, Univ. Politehnica of Bucharest (Romania)

Published in SPIE Proceedings Vol. 4762:
ALT'01 International Conference on Advanced Laser Technologies
Dan C. Dumitras; Maria Dinescu; Vitali I. Konov, Editor(s)

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