Title :
Tunable buried ridge stripe sampled grating distributed Bragg reflector lasers utilizing quantum well intermixing
Author :
Skogen, Erik J. ; Barton, J. ; DenBaars, Steven P. ; Coldren, Larry A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
We apply quantum well intermixing (QWI) to the sampled grating distributed Bragg reflector (SGDBR) laser to demonstrate tuning by current injection in the QWI material and to improve device design. Specifically, by utilizing a centered quantum well active region the mode overlap with the quantum wells is increased by a factor of 1.5 over the offset quantum well case, where the quantum wells are positioned above the waveguide. In this way the modal gain is increased, improving the characteristics of the laser. In order to create a non-absorbing waveguide, QWI has been applied to the back and front mirror to blue shift the quantum well band edge
Keywords :
MOCVD; distributed Bragg reflector lasers; laser mirrors; laser modes; laser tuning; optical fabrication; quantum well lasers; spectral line shift; waveguide lasers; centered quantum well active region; device design; laser mirror; modal gain; nonabsorbing waveguide; quantum well band edge; quantum well intermixing; tunable buried ridge stripe sampled grating distributed Bragg reflector lasers; Bragg gratings; Distributed Bragg reflectors; Laser modes; Laser tuning; Mirrors; Optical design; Optical materials; Quantum well lasers; Tunable circuits and devices; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969226
