Patent ID: 7957447

Claim:
A Vertical-Cavity Surface-Emitting Laser diode (VCSEL) array device, comprising: a substrate extending in a longitudinal direction, at least a first multilayer reflective film, an active layer, and a second multilayer reflective film, formed on the substrate, a plurality of mesa portions formed on the substrate by selectively removing at least a portion of the first multilayer reflective film, the active layer, and the second multilayer reflective film and arranged in a predetermined direction, a selectively oxidized region formed in at least one of the first multilayer reflective film and the second multilayer reflective film, an interlayer insulating film covering at least a circumferential edge, a side portion and a bottom portion of each of the mesa portions, and a surface protecting film covering the interlayer insulating film, the surface protecting film having a plurality of grooves formed along the predetermined direction of the substrate in which at least a portion of the surface protecting film is removed so that the mesa portions are separated from each other by the plurality of grooves, and each groove is a line extending across the substrate.