Patent ID: 8335242
Filing Date: 2012-12-18
Classification: H01L,H01S

Abstract:
1. A nitride semiconductor laser device comprising: a mount that is conductive; a submount that is directly fixed to the mount and that is insulating; a nitride semiconductor laser chip that is mounted on the submount; a first electrical terminal that is fixed to the mount but that is insulated therefrom; a wire that connects the first electrical terminal to a first electrode, which is a p-electrode, of the nitride semiconductor laser chip; and a cap that encloses the wire, the nitride semiconductor laser chip, and the submount and that is fixed to the mount, wherein the mount is formed out of gold-plated metal, and has a base portion that is plate-shaped and that is formed of metal predominantly containing iron and a column-shaped portion that projects from the base portion and that is formed of metal predominantly containing iron or metal predominantly containing copper, the insulating submount is directly mounted on a side face of the column-shaped portion, the cap is formed out of a nonconductive material, and is fixed to the base portion, between the nitride semiconductor laser chip and the insulating submount, a conductive member is provided, to which a second electrode, which is an n-electrode, provided on a bottom face of a substrate of the nitride semiconductor laser chip is electrically connected, the substrate being formed out of a nitride semiconductor, a second electrical terminal is provided that is fixed to the mount but that is insulated therefrom, the second electrical terminal being connected, via a wire, to the conductive member, and the second electrode of the nitride semiconductor laser chip is insulated from the mount.