Patent ID: 8017957

Claim:
A semiconductor laser apparatus comprising: a conductive support member; an insulating layer; a conductive layer formed on one surface of said insulating layer; a first semiconductor laser device having a first semiconductor layer formed on a first substrate, a first electrode formed on said first semiconductor layer, and a second electrode formed on said first substrate, and emitting a light beam of a first wavelength; and a second semiconductor laser device having a second semiconductor layer formed on a second substrate, a third electrode formed on said second semiconductor layer, and a fourth electrode formed on said second substrate, and emitting a light beam of a second wavelength, wherein said first semiconductor laser device including a first current blocking layer that blocks a current that flows from said first electrode to said second electrode, said second semiconductor laser device including a second current blocking layer that blocks a current that flows from said third electrode to said fourth electrode, said first semiconductor laser device being provided on said support member so that said second electrode is positioned on said support member side, said insulating layer and said conductive layer being provided in order on said first electrode of said first semiconductor laser device, said second semiconductor laser device being provided on said conductive layer so that said third electrode is electrically connected with said conductive layer, and a value of capacitance induced between said first electrode and said conductive layer with said insulating layer sandwiched therebetween, being not more than a smaller one of values of capacitances induced in said first current blocking layer and said second current blocking layer.