Patent ID: 8254214

Claim:
A light source unit configured to form a thermally-assisted magnetic recording head by being joined with a slider including an optical system that is provided in an element-integration surface of a slider substrate and propagates a light for thermal assist, the light source unit comprising: a unit substrate including a joining surface that faces an electrode for power supply when the light source unit is joined to the slider, and a source-installation surface that is perpendicular to and adjacent to the joining surface, the electrode for power supply being provided on the side opposite to an opposed-to-medium surface of the slider substrate; a first electrode provided on the joining surface and a second electrode provided on the source-installation surface and electrically connected to the first electrode; and a light source including two electrode layers and a light-emission center that is located in a light-emitting surface adjacent to each of the two electrode layers and emits a light to be entered into the optical system, the light source being installed on the source-installation surface with one of the two electrode layers facing and being bonded onto the second electrode.