# Features of the energy spectra of photoelectrons at the atomic ionization in a two-color laser field of first and third harmonics

## Abstract

Classical analysis and quantum-mechanical studies of the energy spectra of photoelectrons have been carried out for above-threshold ionization of atoms in a two-color laser field of the first and third (n = 3) harmonics. Numerical computations show that the boundary of direct ionization plateau corresponds to the electron energy E {approx} 3.56 U{sub p{sub 1}}, while the boundary of rescattering plateau corresponds to the electron energy E {approx} 16.62 U{sub p{sub 1}} for the two-color field of fundamental frequency and its third harmonic with equal intensities, which is in accordance with the results of classical analysis. The results of classical analysis of the ionization processes in the field of first and nth harmonics of equal intensities show that the length of the direct ionization plateau and the length of the high-energy rescattering plateau decrease with increasing n. The results of numerical analysis of the ionization processes in the field of first and third (n = 3) harmonics correspond to the results of classical analysis carried out by the authors.

- Authors:

- Academy of Sciences of Uzbekistan, Institute of Applied Laser Physics (Uzbekistan)

- Publication Date:

- OSTI Identifier:
- 21072534

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 104; Journal Issue: 2; Other Information: DOI: 10.1134/S1063776107020069; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALCULATION METHODS; COLOR; ELECTRONS; ENERGY SPECTRA; HARMONICS; IONIZATION; LASER RADIATION; NUMERICAL ANALYSIS; QUANTUM MECHANICS; RESCATTERING

### Citation Formats

```
Koval', A. V., E-mail: avcovi@mail.ru, and Koval', V. M.
```*Features of the energy spectra of photoelectrons at the atomic ionization in a two-color laser field of first and third harmonics*. United States: N. p., 2007.
Web. doi:10.1134/S1063776107020069.

```
Koval', A. V., E-mail: avcovi@mail.ru, & Koval', V. M.
```*Features of the energy spectra of photoelectrons at the atomic ionization in a two-color laser field of first and third harmonics*. United States. doi:10.1134/S1063776107020069.

```
Koval', A. V., E-mail: avcovi@mail.ru, and Koval', V. M. Sun .
"Features of the energy spectra of photoelectrons at the atomic ionization in a two-color laser field of first and third harmonics". United States.
doi:10.1134/S1063776107020069.
```

```
@article{osti_21072534,
```

title = {Features of the energy spectra of photoelectrons at the atomic ionization in a two-color laser field of first and third harmonics},

author = {Koval', A. V., E-mail: avcovi@mail.ru and Koval', V. M.},

abstractNote = {Classical analysis and quantum-mechanical studies of the energy spectra of photoelectrons have been carried out for above-threshold ionization of atoms in a two-color laser field of the first and third (n = 3) harmonics. Numerical computations show that the boundary of direct ionization plateau corresponds to the electron energy E {approx} 3.56 U{sub p{sub 1}}, while the boundary of rescattering plateau corresponds to the electron energy E {approx} 16.62 U{sub p{sub 1}} for the two-color field of fundamental frequency and its third harmonic with equal intensities, which is in accordance with the results of classical analysis. The results of classical analysis of the ionization processes in the field of first and nth harmonics of equal intensities show that the length of the direct ionization plateau and the length of the high-energy rescattering plateau decrease with increasing n. The results of numerical analysis of the ionization processes in the field of first and third (n = 3) harmonics correspond to the results of classical analysis carried out by the authors.},

doi = {10.1134/S1063776107020069},

journal = {Journal of Experimental and Theoretical Physics},

number = 2,

volume = 104,

place = {United States},

year = {Sun Apr 15 00:00:00 EDT 2007},

month = {Sun Apr 15 00:00:00 EDT 2007}

}