Details
| Original language | English |
|---|---|
| Pages (from-to) | 529-535 |
| Number of pages | 7 |
| Journal | Optics and spectroscopy |
| Volume | 128 |
| Issue number | 4 |
| Publication status | Published - Apr 2020 |
Abstract
Abstract: Conventionally, attosecond pulses are obtained using generation of high-order optical harmonics upon excitation of various media by femtosecond laser pulses with the central frequency in the infrared range. Here, we consider theoretically an alternative possibility of obtaining an isolated extreme ultraviolet (XUV) attosecond pulse in a thin layer of helium atoms excited by a pair of half-cycle (quasi-unipolar) X-ray pulses. The approach is based on the free polarization decay of an atomic medium. An analogy of the processes under consideration with the phenomenon of superradiance is discussed.
Keywords
- attosecond pulses, helium atom, superradiance, unipolar pulses, X-ray pulses
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Optics and spectroscopy, Vol. 128, No. 4, 04.2020, p. 529-535.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Generation of an Attosecond Pulse in Helium Excited by Half-Cycle X-Ray Pulses
AU - Arkhipov, R. M.
AU - Arkhipov, M. V.
AU - Babushkin, I.
AU - Pakhomov, A. V.
AU - Rosanov, N. N.
N1 - Funding Information: Investigations by R.M. Arkhipov and N.N. Rosanov were financially supported by the Russian Foundation for Basic Research, project nos. 20-32-70049 (theory of attosecond pulse generation and numerical simulations) and 19-02-00312 (sections devoted to the simplified classical theory for the generation of an attosecond pulse and the connection with superradiance). I. Babushkin acknowledges support from the PhoenixD innovation cluster (EXC 2122, project no. 390833453) and Deutsche Forschungsgemeinschaft, project no. BA4156/4-2.
PY - 2020/4
Y1 - 2020/4
N2 - Abstract: Conventionally, attosecond pulses are obtained using generation of high-order optical harmonics upon excitation of various media by femtosecond laser pulses with the central frequency in the infrared range. Here, we consider theoretically an alternative possibility of obtaining an isolated extreme ultraviolet (XUV) attosecond pulse in a thin layer of helium atoms excited by a pair of half-cycle (quasi-unipolar) X-ray pulses. The approach is based on the free polarization decay of an atomic medium. An analogy of the processes under consideration with the phenomenon of superradiance is discussed.
AB - Abstract: Conventionally, attosecond pulses are obtained using generation of high-order optical harmonics upon excitation of various media by femtosecond laser pulses with the central frequency in the infrared range. Here, we consider theoretically an alternative possibility of obtaining an isolated extreme ultraviolet (XUV) attosecond pulse in a thin layer of helium atoms excited by a pair of half-cycle (quasi-unipolar) X-ray pulses. The approach is based on the free polarization decay of an atomic medium. An analogy of the processes under consideration with the phenomenon of superradiance is discussed.
KW - attosecond pulses
KW - helium atom
KW - superradiance
KW - unipolar pulses
KW - X-ray pulses
UR - http://www.scopus.com/inward/record.url?scp=85084921516&partnerID=8YFLogxK
U2 - 10.1134/S0030400X20040025
DO - 10.1134/S0030400X20040025
M3 - Article
AN - SCOPUS:85084921516
VL - 128
SP - 529
EP - 535
JO - Optics and spectroscopy
JF - Optics and spectroscopy
SN - 0030-400X
IS - 4
ER -