Title :
Electrically pumped circular-grating distributed-Bragg-reflector lasers
Author :
Wu, C.M. ; Svilans, M. ; Fallahi, M. ; Templeton, Ian ; Makino, T. ; Glinski, J. ; Maciejko, R. ; Najafi, S.I. ; Blaauw, C. ; Maritan, C. ; Knight, D.G.
Author_Institution :
Adv. Technol. Lab., Bell-Northern Res., Ottawa, Ont., Canada
Abstract :
The design, fabrication, and lasing characteristics of electrically pumped circular-grating distributed-Bragg-reflector (CG-DBR) surface-emitting lasers, were studied. Surface-emitted lasing action was achieved at room temperature under pulsed condition. Although the measured threshold current is still higher than theoretical calculations, CW operation should be possible by improving the fabrication and the device structure.<>
Keywords :
diffraction gratings; distributed Bragg reflector lasers; optical design techniques; semiconductor growth; semiconductor lasers; vapour phase epitaxial growth; CW operation; MOCVD growth; circular-grating distributed-Bragg-reflector lasers; device structure; diode laser fabrication; electrically pumped; laser design; lasing characteristics; measured threshold current; pulsed condition; room temperature; surface-emitting lasers; Distributed feedback devices; Gratings; Laser excitation; Laser feedback; Laser modes; Laser theory; Optical design; Pump lasers; Surface emitting lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
