Patent ID: 7680172

Claim:
A laser diode device, comprising: a semiconductor layer including an active layer, a first conductive type layer and a second conductive type layer; grooves extending into said second conductive type layer, said active layer being between said first conductive type layer and said second conductive type layer; a first electrode electrically connected to a ridge, said ridge being a portion of said second conductive type layer between said grooves; a second electrode electrically connected to said second conductive type layer, a contact portion of said second electrode being within at least one of the grooves; a high resistance region in said second conductive type layer, said high resistance region being between said at least one of the grooves and said active layer, wherein said semiconductor layer has a photoreceptor region and a gain region, said high resistance region being between said photoreceptor region and said gain region, wherein said contact portion is electrically connected to said photoreceptor region.