Title :
Experimental verification of transition from gain- to index-guiding in a rib-waveguide AlGaAs laser
Author :
Reynolds, C.L. ; Holbrook, W.R. ; Shimer, J.A. ; Tharaldsen, S.M. ; Agrawal, Govind P. ; Temkin, H.
Author_Institution :
AT&T Bell Laboratories, Reading, USA
Abstract :
The gain- to index-guiding transition predicted by the lateral analysis of weakly index-guided injection lasers is experimentally demonstrated for an AlGaAs rib-LOC structure. Good agreement between theory and experiment is found. Our results indicate that a lateral index step as small as 2.5 × 10¿3 is sufficient to overcome the carrier-induced anti-guiding effects in AlGaAs lasers and to make them effectively index-guided.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; laser cavity resonators; optical couplers; optical waveguides; semiconductor junction lasers; AlGaAs laser; AlGaAs rib-LOC structure; carrier-induced antiguiding effects; gain- to index-guiding transition; laser cavity resonators; lateral index step; rib-waveguide; semiconductors; weakly index-guided injection lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860885
