Generation of an Attosecond Pulse in Helium Excited by Half-Cycle X-Ray Pulses

R. M. Arkhipov, M. V. Arkhipov, I. Babushkin, A. V. Pakhomov, N. N. Rosanov

Research outputpeer-review

2 Citations (Scopus)


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.

Translated title of the contributionГенерация аттосекундного импульса в газообразной среде атомов гелия, возбуждаемого полуцикловыми рентгеновскими импульсами
Original languageEnglish
Pages (from-to)529-535
Number of pages7
Issue number4
Publication statusPublished - 1 Apr 2020

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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