Separate confinement semiconductor heterostructure laser - with narrowly spaced optically coupled stripes to improve resolution

摘要

Injection laser has a semiconductor heterostructure and a strip geometry for the electrically active region. The region, which includes a pn-heterojunction, is divided into a number of optically coupled, parallel, closely spaced stripes provided with a light output face terminated pn-junction. Used esp. in Separate Confinement Heterostructure (SCH) lasers. A very small threshold current is sufficient to effect emission at a small angle of diversion.