Numerical modeling of the spatial and spectro-temporal behavior of wide-aperture unstable resonator semiconductor lasers

Author

Chelnokov, A.V. ; Lourtioz, J.M. ; Gavrilovic, P.

Author_Institution

Inst. d´´Electron. Fondamentale, Univ. de Paris-Sud, Orsay, France

Volume

7

Issue

8

fYear

1995

Firstpage

863

Lastpage

865

Abstract

We propose a numerical model adapted to the analysis of the (sub)picosecond dynamics of broad area semiconductor optical systems with a simultaneous description of the 2-D spatial and spectral behaviors. The model combines the advantages of the beam propagation method and time-domain method and treats the 2-D spatial inhomogeneities of the laser structure as well as the gain nonlinearities, the finite gain bandwidth, the presence of grating reflectors and the optical index dependence on carrier concentration. The model is applied to simulate the transient response of a DBR unstable cavity laser under current step excitation. The CW regime is calculated as a limit of the dynamic one.<>

Keywords

distributed Bragg reflector lasers; high-speed optical techniques; laser cavity resonators; laser stability; semiconductor lasers; time-domain analysis; 2-D spatial inhomogeneities; CW regime; DBR unstable cavity laser; beam propagation method; broad area semiconductor optical systems; carrier concentration; current step excitation; finite gain bandwidth; gain nonlinearities; grating reflectors; laser structure; numerical model; optical index dependence; picosecond dynamics; spatial behavior; spectro-temporal behavior; subpicosecond dynamics; time-domain method; transient response; wide-aperture unstable resonator semiconductor lasers; Bandwidth; Distributed Bragg reflectors; Gratings; Laser beams; Laser modes; Numerical models; Optical propagation; Semiconductor lasers; Time domain analysis; Transient response;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.403996

Filename

403996