Laser-Stimulated Reactions On The Surface Of Quartz And Some Minerals

Anel F. Mukhamedgalieva

doi:10.1117/12.961588

26 October 1989 Laser-Stimulated Reactions On The Surface Of Quartz And Some Minerals

Anel F. Mukhamedgalieva

Proceedings Volume 1132, High Power Lasers and Laser Machining Technology; (1989) https://doi.org/10.1117/12.961588
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

The influence of CO2 laser radiation (power density 103-105 W/cm2) on the surface of quartz and silica--contained minerals such as nepheline, microcline, etc. in oxidizing, neutral and reducing gaseous media has been investigated. It was found from spectroscopic and chemical analysis, that emitting of silicon-oxygen groupments mainly occured with laser radiation absorption in samples studied. This phenomenon can be explained by selective excitation of Si 0 valent vibrations in solids up to complete destruction of the bonds. The obtained results clearly explained the earlier discovered phenomenon of irreversible "burning out" (clear up) of line in IR absorbtion spectra of solids on the frequency of the laser influence by CO2 laser radiation. On the surface of melted quartz in the medium enriched by hydrogen a laser-stimulated reducing reaction that resulted in appearing of Si H bonds containing combination has been obtained.

Citation Download Citation

Anel F. Mukhamedgalieva "Laser-Stimulated Reactions On The Surface Of Quartz And Some Minerals", Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); https://doi.org/10.1117/12.961588

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