Low divergence electrically pumped circular-grating surface-emitting DBR laser on an InGaAs/GaAs structure

5 August 1993

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 29 (16) , 1412-1414
https://doi.org/10.1049/el:19930946

Abstract

The Letter reports the fabrication and low divergence operation of an electrically pumped circular grating surface emitting DBR laser on an InGaAs/GaAs SQW structure. A threshold current below 85 mA, output power of more than 20 mW and a divergence of less than 1° FWHM were obtained.

Keywords

THRESHOLD CURRENT
ELECTRICAL PUMPING
CIRCULAR-GRATING SURFACE-EMITTING DBR LASER
INGAAS-GAAS
SQW STRUCTURE
LOW DIVERGENCE OPERATION

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