期刊
JOURNAL OF APPLIED PHYSICS
卷 118, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4937896
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资金
- Russian Foundation for Basic Research [15-01-02432, 15-51-46007]
- Russian Science Foundation [14-21-00110]
- European Regional Development Fund
- European Social Fund
- state budget of Czech Republic (Project HiLASE) [CZ.1.05/2.1.00/01.0027]
- Marie Curie International Incoming Fellowship of European Union's Seventh Framework Programme under REA Grant [272919]
A comprehensive analysis of laser-induced modification of bulk glass by single ultrashort laser pulses is presented which is based on combination of optical Maxwell-based modeling with thermoelastoplastic simulations of post-irradiation behavior of matter. A controversial question on free electron density generated inside bulk glass by ultrashort laser pulses in modification regimes is addressed on energy balance grounds. Spatiotemporal dynamics of laser beam propagation in fused silica have been elucidated for the regimes used for direct laser writing in bulk glass. 3D thermoelastoplastic modeling of material relocation dynamics under laser-induced stresses has been performed up to the microsecond timescale when all motions in the material decay. The final modification structure is found to be imprinted into material matrix already at sub-nanosecond timescale. Modeling results agree well with available experimental data on laser light transmission through the sample and the final modification structure. (C) 2015 AIP Publishing LLC.
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