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

authored by

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

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.

Organisation(s)

Institute of Quantum Optics
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

Saint Petersburg State University
St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
RAS - Ioffe Physico Technical Institute

Type

Article

Journal

Optics and spectroscopy

Volume

128

Pages

529-535

No. of pages

7

ISSN

0030-400X

Publication date

04.2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

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

Electronic version(s)

https://doi.org/10.1134/S0030400X20040025 (Access: Closed)