Title :
Role of water in gradual degradation of (Al,Ga)As d.h. lasers
Author_Institution :
Philips Research Laboratories, Eindhoven, Netherlands
Abstract :
The presence of water vapour in the ambient of (Al,Ga)As d.h. lasers is found to be a main cause of facet erosion and gradual output degradation. Facet erosion and gradual degradation are absent in lasers operated in a vacuum of 2×10¿8 torr at c.w. output powers of up to 4 mW per ¿m stripe width.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; semiconductor junction lasers; (Al,Ga)As DH lasers; facet erosion; gradual output degradation; water vapour;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800308
