Patent ID: 7939929
Filing Date: 2011-05-10
Classification: B82Y,H01S

Abstract:
1. A semiconductor laser device comprising: a supporting substrate; a semiconductor laser device portion which is formed on a surface of the supporting substrate, and which includes a pair of cavity surfaces, said cavity surfaces being perpendicular to a direction in which a cavity of said semiconductor laser device portion extends; and an adhesive layer with which the supporting substrate and the semiconductor laser device portion are adhered to each other; wherein an ohmic electrode and a pad electrode are respectively formed on a surface of the semiconductor laser device portion facing the supporting substrate, wherein the adhesive layer is provided between the pad electrode and the supporting substrate, wherein an end of the adhesive layer at the cavity surfaces side of the semiconductor laser device portion is placed inwardly of an end of the pad electrode and an end of the supporting substrate at said cavity surfaces side, and wherein the semiconductor laser device further comprises at least one area between the supporting substrate and the pad electrode in which no adhesive layer exists, said area being near the end of the pad electrode and the end of the supporting substrate at the cavity surfaces side.