Electrically pumped vertical cavity laser.

摘要

An electrically pumped vertical cavity laser depends upon reflection as between an unaided distributed Bragg reflector (4) on one side of the cavity and a distributed Bragg reflector (8) supplemented by a metallic reflector (12) on the other. Placement of the shorter supplemented DBR on the p-conductivity type side of the cavity reduces the resistance of the electrical series pump path. Permitted use of an active region (1) of a thickness of 1 mu m or less in the lasing direction results in low lasing threshold. The structural approach is of significance for laser integration in integrated circuits, whether electro-optic or all-optic.