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European Quantum Electronics Conference (EQEC)

The analytic approach to the problem of above-threshold ionization of atoms and harmonic generation

D.G. Zaretsky, É. A. Nersesov

Published Jan 1, 1994• 0 citations
Publisher
DOI
10.1109/eqec.1994.698446

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We formulate the problem of harmonic generation by a two-level system with ionization in terms of a nonlinear Riccati-type differential equation. Different simplified forms of this equation are solved analytically and the resulting photon-emission spectra are compared with those obtained by others along different lines. For the complete-form Riccati-type equation, we give an iterative code solving this equation for arbitrary laser pulses. The code is used to study the effect of ionization and turn-on of the laser pulse on the harmonic spectrum.