This article is cited in 5 papers

Nonlinear optical phenomena

Modification of the spectrum of high harmonics by a weak vacuum ultraviolet field

T. S. Sarantseva^ab, M. V. Frolov^b, N. V. Vvedenskii<sup>abc

a</sup> Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod
^b Voronezh State University
^c Lobachevski State University of Nizhni Novgorod

Abstract: Within the framework of the time-dependent effective range theory, we have calculated the spectra of high harmonics in a field containing an intense low-frequency component and a weak (perturbative) high-frequency component with a photon energy exceeding the ionisation potential of the atomic target. We have presented a quantum-mechanical substantiation of the quasi-classical theory [A.V. Flegel et al. Quantum Electron., 47, 222 (2017)], which describes additional generation channels of high harmonics induced by a weak high-frequency field.

Keywords: high harmonic generation, effective range theory, strong field, vacuum ultraviolet.

Received: 21.02.2018
Revised: 21.05.2018

 English version: Quantum Electronics, 2018, 48:7, 625–629

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