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17 March 2023 Propagation and energy transfer of intense and ultrashort laser pulse in solids: first-principles computational approach
Kazuhiro Yabana
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Proceedings Volume PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII; PC1240804 (2023) https://doi.org/10.1117/12.2651218
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Energy transfer from laser pulses to electrons in solids is a key quantity to understand laser materials processing. We have been developing a first-principles computational approach based on ab initio time-dependent density functional theory (TDDFT) that has been made public as a software SALMON. Combining microscopic calculation of electronic motion by TDDFT and mesoscopic light-propagation calculation by Maxwell equations, ab initio evaluation of energy transfer is feasible in nanometer and femtosecond spatio-temporal resolution. Using the method, systematic calculations are under way for several distinct materials including metals, semiconductors, and large-gap insulators, for a wide range of laser intensities.
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Kazuhiro Yabana "Propagation and energy transfer of intense and ultrashort laser pulse in solids: first-principles computational approach", Proc. SPIE PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, PC1240804 (17 March 2023); https://doi.org/10.1117/12.2651218
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KEYWORDS
Energy transfer
Solids
Ultrafast phenomena
Electrons
Laser processing
Pulsed laser operation
Thin films
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