A Vertical-Cavity Surface-Emitting Laser at Threshold

Author

Fordell, Thomas ; Toffano, Zeno ; Lindberg, Åsa Marie

Author_Institution

Accelerator Lab., Helsinki Univ.

Volume

18

Issue

21

fYear

2006

Firstpage

2263

Lastpage

2265

Abstract

Linewidth is measured over the threshold transition of a vertical-cavity surface-emitting laser and results are compared to a Fokker-Planck semiconductor laser model. The linewidth shows nonmonotonous behavior at threshold similar to that previously observed in distributed feedback lasers. The behavior agrees with the Fokker-Planck model if the linewidth enhancement factor alphaap5.0. Measurement of the relaxation oscillation frequency and the damping rate using an injected optical probe allows, together with the Fokker-Planck model, the extraction of major laser parameters

Keywords

laser transitions; semiconductor lasers; spectral line breadth; surface emitting lasers; Fokker-Planck semiconductor laser model; distributed feedback lasers; linewidth enhancement factor; relaxation oscillation frequency; vertical-cavity surface-emitting laser; Damping; Distributed feedback devices; Frequency measurement; Laser feedback; Laser modes; Laser transitions; Optical feedback; Semiconductor lasers; Surface emitting lasers; Vertical cavity surface emitting lasers; Optical spectroscopy; quantum-well lasers; semiconductor lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.884882

Filename

1715395