A. M. Ishkhanyan, V. P. Krainov, “Derivation of the photo-recombination spectrum at the irradiation of atoms by a strong laser field based on the Markoff approcimation”, Optics and Spectroscopy, 2022, Volume 130, Issue 4,Pages <nobr>474

International Scientific and Technical Conference "Ultrafast Optical Phenomena". October 4-8, 2021, Moscow
Spectroscopy and physics of atoms and molecules

Derivation of the photo-recombination spectrum at the irradiation of atoms by a strong laser field based on the Markoff approcimation

A. M. Ishkhanyan^ab, V. P. Krainov^c

^a Russian-Armenian University, Yerevan
^b Institute for Physical Research, National Academy of Sciences of Armenia
^c Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region

Abstract: We derived the spectrum of the photon spontaneous emission at the irradiation of atoms by a strong laser field. Our approach is based on the Markoff (factorization) approximation for the total density matrix of the system consisting of an atom, laser field and the vacuum electromagnetic field.

Keywords: femtosecond laser pulses, markoff approximation, tunneling ionization, ponderomotive energy, spontaneous emission.

Received: 20.12.2021
Revised: 20.12.2021
Accepted: 30.12.2021

DOI: 10.21883/OS.2022.04.52257.46-21