期刊
SCIENCE
卷 353, 期 6302, 页码 916-919出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aag1268
关键词
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资金
- National Center of Competence in Research Molecular Ultrafast Science and Technology (NCCR MUST) - Swiss National Science Foundation
- JSPS KAKENHI [15H03674, 26-1511]
- RIKEN AICS through the HPCI System Research project [hp150101]
- MEXT
- Grants-in-Aid for Scientific Research [15H03674, 14J01511] Funding Source: KAKEN
Short, intense laser pulses can be used to access the transition regime between classical and quantum optical responses in dielectrics. In this regime, the relative roles of inter-and intraband light-driven electronic transitions remain uncertain. We applied attosecond transient absorption spectroscopy to investigate the interaction between polycrystalline diamond and a few-femtosecond infrared pulse with intensity below the critical intensity of optical breakdown. Ab initio time-dependent density functional theory calculations, in tandem with a two-band parabolic model, accounted for the experimental results in the framework of the dynamical Franz-Keldysh effect and identified infrared induction of intraband currents as the main physical mechanism responsible for the observations.
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