Patent ID: 7829904
Filing Date: 2010-11-09
Classification: H01L

Abstract:
1. A device for emitting optical radiation, comprising: a first dielectric-type mirror and a second dielectric-type mirror defining a resonant cavity; an active layer in the resonant cavity comprising a main area excitable to generate the optical radiation; first and second electro-conductive layers associated with said first and second mirrors, respectively, for generating an electric field to which an exciting current for the active layer is associated, wherein said main area faces said first and second layers; a dielectric region included between said first and second layers spacing corresponding peripheral portions of said first and second layers from each other such that the first and second electro-conductive layers are spaced further apart in the peripheral portions and closer together in the main area so that the electric field being present in the main area is higher than an electric field between said peripheral portions, whereby the exciting current is generated in the main area of the active layer.