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Proceedings Paper

Laser interaction with carbon-type materials
Author(s): Milesa Z. Sreckovic; B. Kaludjerovic; S. Bojanic; N. Ivanovic; V. Rajkovic; S. Ristic; Z. Fidanovski
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Paper Abstract

It is well known that application of stimulated light may influence phase modifications and changes of carbon structure. These effects of laser irradiation, in different working regimes and atmospheres, are widely investigated for fullerenes and diamond structure, but for many other carbon materials, are not. In the presented experiments, we treated by Q-switch ruby and Nd3+ YAG laser beams different carbon clothes, produced by pyrolysis (T <EQ 1000 degree(s)C) of cellulose materials in inert atmosphere. The materials are interesting for many applications, including medical. The laser pulse energy was of order of 0.1 - 1 J, in one, or multi-pulse regime. Focused and unfocused beams were used to induce damages and oxidation of sample surfaces. the damages were analyzed by scanning electron microscopy and specific area is measured by Brunauer, Emmet and Teller method, before and after the interaction. Materials exhibited differences in the damaging level and the fiber breaking thresholds. Mechanisms of laser interaction leading to oxidation of carbon type materials are discussed, and the necessary experimental conditions for intended changes are analyzed.

Paper Details

Date Published: 19 August 1998
PDF: 4 pages
Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.320994
Show Author Affiliations
Milesa Z. Sreckovic, Faculty of Electrical Engineering (Serbia)
B. Kaludjerovic, Vinca Institute of Nuclear Sciences (Serbia)
S. Bojanic, Institute Mihailo Pupin (Serbia)
N. Ivanovic, Vinca Institute of Nuclear Sciences (Serbia)
V. Rajkovic, Vinca Institute of Nuclear Sciences (Serbia)
S. Ristic, VTI (Serbia)
Z. Fidanovski, VTI (Serbia)

Published in SPIE Proceedings Vol. 3573:
OPTIKA '98: 5th Congress on Modern Optics
Gyorgy Akos; Gabor Lupkovics; Andras Podmaniczky, Editor(s)

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