Patent ID: 9124069
Filing Date: 2015-09-01
Classification: H01S

Abstract:
1. A VCSEL formed on a substrate comprising: an epitaxial structure having a laterally narrower mesa structure on a laterally wider base and having a longitudinal axis aligned with a direction of light emitted from the VCSEL; the mesa structure with a top mesa surface and side mesa surface and containing an undoped top mirror; the base comprising: a dielectric material on the top surface of the periodically doped conduction layer and having a tapered profile shape from a longitudinally thinner inner portion proximal the mesa side surface to a longitudinally thicker outer portion distal the mesa side surface; an isolation trench extending from the top surface of the periodically doped conduction layer to the periodically doped spacer layer and having the dielectric material so as to laterally bound the active region; a first intracavity contact coupled to the periodically doped conduction layer and the undoped top mirror, the first intracavity contact covering a portion of the top mesa surface and extending over the side mesa surface, periodically doped conduction layer, and dielectric material to the longitudinally thicker outer portion; and a second intracavity contact having a portion in the isolation trench and being coupled to the periodically doped spacer layer.