Patent ID: 6803605
Filing Date: 2004-10-12
Classification: H01S

Abstract:
GaAs based laser comprising:an n-doped first layer; p-doped second layer; an active region with quantum wells in-between said first and second layers, each of said first and second layers comprising a material chosen from the group consisting of GaAs, GaAlAs, InGaAsP and InGaAs; a laser channel in said active region; a surface structure on an outer surface of said first layer defining said channel; a native nitride layer next to said outer surface of said first layer except on predetermined positions on said surface structure said native nitride layer being formed by nitridizing the outer surface of the first layer including the surface structure to provide a higher band gap surface and to reduce interface carrier recombination velocity; and at least one of a protection layer and a mirror coating on the outside of said native nitride layer.