Patent ID: 6597017
Filing Date: 2003-07-22
Classification: H01S

Abstract:
A surface emitting semiconductor laser comprising:a semiconductor base layer made of a semiconductor crystal whose in-plane lattice constant is a0; a cladding layer or DBR mirror including a first layer made of a semiconductor crystal having an in-plane lattice constant a1, and a second layer made of a semiconductor crystal having an in-plane lattice constant a2, wherein a1&gE;a0Ã—1.003 a2&lE;a0Ã—0.997, â€ƒand the cladding layer or DBR mirror is formed while being subjected to pseudo lattice matching by epitaxially growing the first and second layers on the semiconductor base layer such that lattice strains produced in the first and second layers assume opposite directions; an active region having at least one function of recombination, generation and migration of carriers; and the active region and the cladding layer or DBR mirror arranged at different vertical levels vertically above the semiconductor base layer, wherein the semiconductor base layer comprises GaN or AlGaInN lattice matched to GaN, the first layer comprises Ga1âˆ’xInxN, wherein 0yGa1âˆ’yN, wherein 0