期刊
PHYSICAL REVIEW A
卷 78, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.78.061402
关键词
argon; atomic structure; high-speed optical techniques; ion recombination; krypton; photoionisation; xenon
资金
- Japan Society for the Promotion of Science (JSPS) [19204041, 19540416]
- Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [19204041, 19540416] Funding Source: KAKEN
We observe high-order harmonic spectra generated from a thin atomic medium, Ar, Kr, and Xe, by intense 800-nm and 1300-nm femtosecond pulses. A clear signature of a single-atom response is observed in the harmonic spectra. Especially in the case of Ar, a Cooper minimum, reflecting the electronic structure of the atom, is observed in the harmonic spectra. We successfully extract the photorecombination cross sections of the atoms in the field-free condition with the help of an accurate recolliding electron wave packet. The present protocol paves the way for exploring ultrafast imaging of molecular dynamics with attosecond resolution.
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