Patent ID: 8275013
Filing Date: 2012-09-25
Classification: H01L,H01S

Abstract:
1. A semiconductor laser device comprising: a first semiconductor laser element formed on a surface of a first conductive type substrate, obtained by stacking a first conductive type first semiconductor layer, a first active layer and a second conductive type second semiconductor layer successively from said first conductive type substrate; and a second semiconductor laser element obtained by successively stacking a first conductive type third semiconductor layer, a second active layer and a second conductive type fourth semiconductor layer; and a heat radiator base, wherein a first semiconductor laser element portion is constituted by said first conductive type substrate and said first semiconductor laser element, said first semiconductor laser element portion has a step portion for arranging said second semiconductor laser element, said step portion has a bottom portion formed at either said first conductive type substrate or said first semiconductor laser element, said bottom portion is located at a height different from said surface of said first conductive type substrate on which said first semiconductor layer is formed, said third semiconductor layer is electrically connected to said first semiconductor layer by bonding a side of said third semiconductor layer to said bottom portion through a first fusible layer, said first semiconductor laser element and said second semiconductor laser element are mounted on said heat radiator base, sides of said second and fourth semiconductor layers of respective said first and second semiconductor laser element are fixed to said heat radiator base in a same plane through a second fusible layer.