Patent ID: 6044100
Filing Date: 2000-03-28
Classification: H01S

Abstract:
A VCSEL comprisinga pair of multi-layered mirrors forming a cavity resonator having a resonator as perpendicular to said layers,an active region disposed within said resonator,first and second electrodes, said first electrode surrounding one said mirrors, anda current guide for directing current from said first electrode through a current aperture to said active region, thereby to generate stimulated emission of radiation which propagates along said axis, a portion of said radiation forming an output signal which emerges from the resonator through at least one of said mirrors, characterized in thatsaid current guide includes a stop-etch layer adjacent said one mirror, a first relatively highly doped layer adjacent said stop-etch layer, and a first lower doped layer adjacent said first highly doped layer, said first highly doped layer being essentially located at a node of the standing wave pattern of said radiation in said resonator.