Title :
Tapered-cavity surface-emitting distributed-Bragg-reflector semiconductor lasers: modeling and experiment
Author :
Luo, H. ; Kasunic, K.J. ; Macomber, S.H. ; Bedford, R. ; Moloney, J.V. ; Fallahi, M.
Author_Institution :
ACTMicroDevices Inc., Radford, VA, USA
Abstract :
We report on the design and fabrication of tapered cavity grating coupled surface-emitting distributed Bragg reflector (DBR) lasers in the 980-nm regime. A curved second-order grating is used at the end of a tapered gain section to provide feedback as well as collimated surface out-coupling. A detailed numerical analysis shows that operation up to approximately twice the threshold is possible without significant degradation of the far field. Near diffraction-limited collimated surface-emitting output with moderate power of about 150 mW is obtained under continuous operation.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; laser cavity resonators; laser theory; laser transitions; optical fabrication; semiconductor device models; sputter etching; surface emitting lasers; 150 mW; 980 nm; collimated surface out-coupling; continuous operation; curved second-order grating; far field; near diffraction-limited collimated surface-emitting output; tapered cavity grating coupled surface-emitting DBR lasers; tapered gain section; tapered-cavity surface-emitting distributed-Bragg-reflector semiconductor lasers; Bragg gratings; Collimators; Distributed Bragg reflectors; Distributed feedback devices; Laser feedback; Laser modes; Optical design; Optical device fabrication; Semiconductor lasers; Surface emitting lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.883373
