Phase and amplitude near-resonance self-action in periodically modulated laser beams

Author

Derbov, Vladimir L. ; Serov, Vladislav V. ; Plastun, Inna L. ; Larionov, Denis A.

Author_Institution

Saratov State Univ., Russia

Volume

2

fYear

2003

fDate

29 June-3 July 2003

Firstpage

5

Abstract

Full space-time numerical modeling of near-resonance self-action of a beam, whose frequency is harmonically modulated in time, is presented. Maxwell-Bloch equations describing the propagation of the beam through a two-level medium with saturable absorption and refraction are solved using an original stable numerical scheme for multidimensional nonlinear Schrodinger equations. Delayed redistribution of intensity over the beam cross-section due to nonlinear self-focusing and self-phase-modulation effects is shown to affect the phase and the amplitude dynamics of the output signal in a rather nontrivial way, depending on the carrier laser frequency.

Keywords

Maxwell equations; Schrodinger equation; laser beams; nonlinear differential equations; optical saturable absorption; optical self-focusing; self-phase modulation; Maxwell-Bloch equations; amplitude dynamics; initially Gaussian beam; multidimensional nonlinear Schrodinger equations; near-resonance self-action; nonlinear self-focusing effects; periodically modulated laser beams; phase dynamics; saturable absorption; saturable refraction; self-phase-modulation effects; space-time numerical modeling; stable numerical scheme; two-level medium; Amplitude modulation; Frequency modulation; Laser beams; Laser modes; Maxwell equations; Nonlinear equations; Numerical models; Optical modulation; Optical propagation; Phase modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks, 2003. Proceedings of 2003 5th International Conference on

Print_ISBN

0-7803-7816-4

Type

conf

DOI

10.1109/ICTON.2003.1263133

Filename

1263133