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  First-principles calculations for initial electronic excitation in dielectrics induced by intense femtosecond laser pulses

Sato, S., & Yabana, K. (2016). First-principles calculations for initial electronic excitation in dielectrics induced by intense femtosecond laser pulses. In LASER-INDUCED DAMAGE IN OPTICAL MATERIALS 2016. Bellingham, Washington USA: SPIE. doi: 10.1117/12.2243012.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-8E8D-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-99DF-8
Genre: Conference Paper

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100141A.pdf (Publisher version), 436KB
 
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https://dx.doi.org/10.1117/12.2243012 (Publisher version)
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 Creators:
Sato, S.1, 2, Author              
Yabana, K.2, Author
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Computational Sciences, University of Tsukuba, ou_persistent22              

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Free keywords: Laser damage, Ultrashort pulse, First-principles calculation, Time-dependent density functional theory
 Abstract: Laser-induced damage of SiO2 (alpha-quartz) is investigated by first-principles calculations. The calculations are based on a coupled theoretical framework of the time-dependent density functional theory and Maxwell equation to describe strongly-nonlinear laser-solid interactions. We simulate irradiation of the bulk SiO2 with femtosecond laser pulses and compute energy deposition from the laser pulse to electrons as a function of the distance from the surface. We further analyze profiles of laser-induced craters, comparing the transferred energy with the cohesive energy of SiO2. The theoretical crater profile well reproduces the experimental features for a relatively weak laser pulse. In contrast, the theoretical result fails to reproduce the measured profiles for a strong laser pulse. This fact indicates a significance of the subsequent atomic motions that take place after the energy transfer ends for the formation of the crater under the strong laser irradiation.

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Language(s): eng - English
 Dates: 2016-12-062016-12-06
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Internal
 Identifiers: DOI: 10.1117/12.2243012
 Degree: -

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Title: SPIE Laser Damage, 2016
Place of Event: Boulder, Colorado, United States
Start-/End Date: 2016-09-25 - 2016-09-28

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Project name : This work was supported by JSPS KAKENHI Grants No, 15H03674 and No. 26-1511, and used computational resources of the K computer provided by the RIKEN Advanced Institute for Computational Science through the HPCI System Research project (Project ID: hp140103).
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Title: LASER-INDUCED DAMAGE IN OPTICAL MATERIALS 2016
Source Genre: Proceedings
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Publ. Info: Bellingham, Washington USA : SPIE
Pages: - Volume / Issue: - Sequence Number: UNSP 100141A Start / End Page: - Identifier: DOI: 10.1117/12.2243012

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Title: Proceedings of SPIE
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Publ. Info: Bellingham, Washington USA : SPIE
Pages: - Volume / Issue: 10014 Sequence Number: - Start / End Page: - Identifier: -