Patent ID: 6404792
Filing Date: 2002-06-11
Classification: H01L

Abstract:
A semiconductor laser device comprising:a support substrate consisting essentially of sapphire; a multi-layer structure having a plurality of gallium nitride-based compound semiconductor layers stacked on said support substrate to form a laser cavity, said semiconductor layers including an active layer and n-type and p-type semiconductor layers interposing said active layer, said n-type semiconductor layer being closer to said support substrate; a lead-out groove formed in said multi-layer structure to extend in parallel to said laser cavity, said groove extending through said p-type semiconductor layer and said active layer to expose a portion of said n-type semiconductor layer at a bottom of the groove; a first main electrode arranged in contact with said n-type semiconductor layer at the bottom of said groove; and a second main electrode arranged in contact with said p-type semiconductor layer, wherein said first and second main electrodes have first and second electrode pads, respectively, said first and second electrode pads being arranged on substantially the same plane with said lead-out groove interposed therebetween.