Patent ID: 6967770
Filing Date: 2005-11-22
Classification: H01S

Abstract:
1. A method of manufacturing an active optical device having reduced carrier depletion within a p-doped active layer, the method comprising the steps of: a) providing a substrate layer having a top surface; b) forming the p-doped active layer on the top surface of the substrate layer; c) forming a semiconductor layer on the p-doped active layer; d) defining and etching a mesa structure, including mesa walls, in the p-doped active layer and the semiconductor layer, and exposing portions of the top surface of the substrate; e) defining and etching a ridge structure in the semiconductor layer; f) forming a dielectric protection layer over the portions of the top surface of the substrate exposed in step d) and portions of the mesa walls formed in the p-doped active layer; g) forming a contact layer over the semiconductor layer; and h) forming electrical contacts over the semiconductor layer.