Patent ID: 6717974
Filing Date: 2004-04-06
Classification: H01S

Abstract:
A surface emitting laser for emitting coherent light comprising:a substrate; a plurality of semiconductor layers formed on said substrate, said plurality of the-semiconductor layers including: a first distributed Bragg reflector (DBR) formed on said substrate, an active region formed on said first DBR, a second DBR including a laser barrel region through which coherent light can pass, formed on said active region; and a non-conducting ion implantation region defining a conductive boundary of the laser barrel region of the second DBR; a heavily doped semiconductor layer formed on the second DBR and the non-conducting ion implantation region; a first conductive electrical contact formed below the substrate; and a second conductive electrical contact formed directly on the heavily doped semiconductor layer, both the conductive electrical contacts enabling biasing of said active region to emit coherent light, wherein a combination of the heavily doped semiconductor layer and the second conductive electrical contact provides current flow through the surface emitting laser without obstructing coherent light emitted from the laser barrel region.