Patent ID: 6750071
Filing Date: 2004-06-15
Classification: H01S

Abstract:
A method of forming a VCSEL having a plurality of layers, comprising:forming a lower mirror on a substrate; forming an optical cavity over said lower mirror; forming an oxide aperture layer over said optical cavity; forming a p-type contact layer over said oxide aperture layer; forming an annular ohmic intracavity contact pad on said p-type contact layer; removing a plurality of layers of said VCSEL around said ohmic intracavity contact pad using an outer circumferential edge of said ohmic intracavity contact pad as a mask to form a circular mesa and thereby expose said oxide aperture layer at the mesa sidewall; and oxidizing said oxide aperture layer inwardly from said mesa sidewall to form an annular oxide aperture that is self-aligned with said ohmic intracavity contact pad.