Title :
Characteristics of coherent two-dimensional grating surface emitting diode laser arrays during CW operation
Author :
Evans, Gary A. ; Bour, David P. ; Carlson, Nils W. ; Amantea, Robert ; Hammer, Jacob M. ; Lee, Hao ; Lurie, Michael ; Lai, Richard C. ; Pelka, Paul F. ; Farkas, Robert E. ; Kirk, Jay B. ; Liew, So Kuen ; Reichert, Walter F. ; Wang, Christine A. ; Choi, Ho
Author_Institution :
David Sarnoff Res. Center, Princeton, NJ, USA
fDate :
6/1/1991 12:00:00 AM
Abstract :
Recent progress in the development of monolithic two-dimensional coherent grating surface emitting (GSE) laser arrays is presented. Such GSE arrays have operated continuously to more than 3 W/surface and pulsed to more than 30 W/surface. They have achieved continuous wave (CW) threshold current densities of under 140 A/cm2 with CW differential quantum efficiencies of 20-46% per surface. Linewidths in the 40-100 MHz range were obtained with output powers of 100-300 mW per surface. The arrays typically consist of 10-30 mutually injection coupled gain sections with 10 laterally coupled ridge-guided lasers in each gain section. A single GaInAs strained-layer quantum well with a graded-index separate confinement heterostructure (GRINSCH) geometry allows junction down mounting with light emission through the transparent GaAs substrate. A surface relief grating is used for feedback and outcoupling
Keywords :
III-V semiconductors; diffraction gratings; gallium arsenide; indium compounds; semiconductor laser arrays; 100 to 300 mW; 3 W; 30 W; CW differential quantum efficiencies; CW operation; GRINSCH geometry; III-V semiconductor; coherent two-dimensional grating surface emitting diode laser arrays; feedback; graded-index separate confinement heterostructure; injection coupled gain sections; junction down mounting; laterally coupled ridge-guided lasers; linewidths; monolithic arrays; outcoupling; output powers; pulsed operation; single GaInAs strained-layer quantum well; surface relief grating; threshold current densities; transparent GaAs substrate; Gratings; Laser feedback; Mutual coupling; Optical arrays; Optical coupling; Power generation; Quantum well lasers; Surface emitting lasers; Surface waves; Threshold current;
Journal_Title :
Quantum Electronics, IEEE Journal of
