Conference "Ultrafast Optical Phenomena (Ultra fast Light-2023)" October 2-4, 2023, Lebedev Institute of Physics, Russian Academy of Sciences
Nonlinear optics

Channel separation in the high-order harmonic generation by an atom in intense infrared field and attosecond pulse

T. S. Sarantseva^ab, A. A. Romanov^a, A. A. Silaev^a, N. V. Vvedenskii^ac, M. V. Frolov<sup>ab

a</sup> Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia
^b Voronezh State University, 394018 Voronezh, Russia
^c A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia

Abstract: This work is devoted to the study of the high-order harmonic generation (HHG) induced by two component field with mutually orthogonal polarization of low-frequency and high-frequency components. A new method for separation of HHG channels induced by low-frequency and high-frequency fields based on polarization measurements is proposed. The influence of the initial state symmetry on the efficiency of channel separation is discussed.

Keywords: high-order harmonic generation, two-component laser field, ultrashort laser pulses, attosecond pulses, XUV-initiated processes, polarization filtering.

Received: 11.12.2023
Revised: 09.01.2024
Accepted: 16.01.2024

DOI: 10.61011/EOS.2024.01.58292.17-24

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