High slope efficiency measured from a composite-resonator vertical-cavity laser

Author

Grasso, D.M. ; Choquette, K.D. ; Serkland, D.K. ; Peake, G.M. ; Geib, K.M.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL, USA

Volume

18

Issue

9

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1019

Lastpage

1021

Abstract

We report high differential slope of the light versus current (L-I) characteristic in excess of 400% external quantum efficiency from a monolithic dual resonator vertical-cavity surface-emitting laser. The additional optical cavity of the composite resonator can provide gain or loss to the distributed laser mode, depending on the bias conditions. We describe the factors contributing to the internal optical loss, and present a qualitative model for the L-I characteristic. With sufficient current injected into the top cavity, the composite-resonator vertical-cavity laser achieves over 6 W/A of differential slope efficiency from threshold to greater than 1 mW of output power, which may be applicable for analog optical data links.

Keywords

distributed Bragg reflector lasers; laser cavity resonators; laser modes; optical communication equipment; optical losses; quantum well lasers; surface emitting lasers; analog optical data links; bias condition; composite-resonator laser; distributed Bragg reflector laser; distributed laser mode; external quantum efficiency; internal optical loss; monolithic dual resonator; optical cavity; optical gain; quantum well laser; slope efficiency; surface-emitting laser; vertical-cavity laser; Distributed Bragg reflectors; Laser modes; Optical device fabrication; Optical losses; Optical modulation; Optical resonators; Power lasers; Radio frequency; Surface emitting lasers; Vertical cavity surface emitting lasers; Coupled cavity; optical link; slope efficiency;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.873544

Filename

1621263