Title :
Low divergence electrically pumped circular-grating surface-emitting DBR laser on an InGaAs/GaAs structure
Author :
Fallahi, Mahmoud ; Dion, M. ; Chatenoud, F. ; Templeton, I.M. ; McGreer, K.A. ; Champion, G. ; Barber, Ramon
Author_Institution :
Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
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 degrees FWHM were obtained.
Keywords :
III-V semiconductors; distributed Bragg reflector lasers; gallium arsenide; indium compounds; semiconductor lasers; semiconductor quantum wells; InGaAs-GaAs; SQW structure; circular-grating surface-emitting DBR laser; electrical pumping; low divergence operation; threshold current;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930946
