Abstract
Abstract
This paper focuses on the preparation of a new extended set of calibrations of cooling rate (fictive temperature) in fused silica determined by inelastic light scattering and its subsequent use to characterize the local cooling rate distribution in ultra-short pulsed (USP) laser modification. In order to determine the thermal history (e.g. cooling rate and fictive temperature) of fused silica, high-resolution inelastic light-scattering experiments (Raman and Brillouin spectroscopy) were investigated. Calibrations were performed and compared to the existing literature to quantify structural changes due to a change of fictive temperature. Compared to existing calibrations, this paper provides an extension to lower and higher cooling rates. Using this new set of calibrations, we characterized a USP laser modification in fused silica and calculated the local fictive temperature distribution. An equation relating the fictive temperature (Tf
) to cooling rates is given. A maximum cooling rate of 3000 K min−1 in the glass transition region around 1200 °C was deduced from the Raman analysis. The Brillouin observations are sensitive to both the thermal history and the residual stress. By comparing the Raman and Brillouin observations, we extracted the local residual stress distribution with high spatial resolution. For the first time, combined Raman and Brillouin inelastic light scattering experiments show the local distribution of cooling rates and residual stresses (detailed behavior of the glass structure) in the interior and the surrounding of an USP laser modified zone.
Subject
Industrial and Manufacturing Engineering
Reference46 articles.
1. Dash line glass- and sapphire-cutting with high power USP laser;Mishchik,2016
2. Laser-matter interaction in fusion welding of fused silica using ultrashort pulse lasers;Miyamoto,2009
3. Ultrafast laser processing of transparent media–glass welding;Alexeev,2010
4. The influence of femtosecond laser wavelength on waveguide fabrication inside fused silica;Hernandez-Rueda;Appl. Phys. Lett.,2017
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