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Kvantovaya Elektronika, 2020, Volume 50, Number 4, Pages 375–385 (Mi qe17236)  

This article is cited in 4 scientific papers (total in 4 papers)

Extreme light fields and their interaction with matter

Interference effects in the high-order harmonic amplification process in the active medium of a plasma-based X-ray laser modulated by an optical field

I. R. Khairulina, V. A. Antonovab, O. A. Kocharovskayacd

a Federal Research Center The Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod
b Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
c Department of Physics and Astronomy, Texas A&M University, USA
d Institute for Quantum Science and Engineering, Texas A&M University, USA
Full-text PDF (969 kB) Citations (4)
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Abstract: We study the process of propagation of high harmonics of optical radiation in an active medium of a plasma-based X-ray laser, simultaneously irradiated by an intense optical field of fundamental frequency. It is shown that for moderate plasma dispersion of the active medium at the frequency of the modulating optical field, the energy and relative amplitudes of the harmonics at the output of the medium are determined by their phases at the entrance to the medium, as well as by the time-delay of the harmonics with respect to the modulating field. These dependences are due to interference of high-order harmonics with a set of multi-frequency fields generated by each of the harmonics in the process of coherent scattering in a modulated active medium. The possibilities of using these effects to increase the efficiency of harmonic amplification, to control the harmonic spectrum, and determine the relative phases at the entrance to the medium are discussed on the example of the active medium of hydrogen-like Li2+ ions (with a 13.5 nm wavelength of an inverted transition).
Keywords: quantum interference, plasma-based X-ray laser, strong optical fields, high-order harmonics of optical field, amplification of X-ray radiation.
Funding agency Grant number
Russian Science Foundation 19-72-00140
Received: 19.02.2020
English version:
Quantum Electronics, 2020, Volume 50, Issue 4, Pages 375–385
DOI: https://doi.org/10.1070/QEL17290
Bibliographic databases:
Document Type: Article
Language: Russian


Citation: I. R. Khairulin, V. A. Antonov, O. A. Kocharovskaya, “Interference effects in the high-order harmonic amplification process in the active medium of a plasma-based X-ray laser modulated by an optical field”, Kvantovaya Elektronika, 50:4 (2020), 375–385 [Quantum Electron., 50:4 (2020), 375–385]
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  • https://www.mathnet.ru/eng/qe/v50/i4/p375
  • This publication is cited in the following 4 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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