Patent ID: 7843984
Filing Date: 2010-11-30
Classification: H01S

Abstract:
1. A semiconductor laser device, comprising: a red semiconductor laser element; and an infrared semiconductor laser element, wherein the red semiconductor laser element and the infrared semiconductor laser element are integrated on a same substrate, the red semiconductor laser element has a double hetero structure in which a red-side active layer made of an InGaP-based or AlGaInP-based material is interposed between a red-side first conductivity type cladding layer and a red-side second conductivity type cladding layer having a ridge for current injection, the infrared semiconductor laser element has a double hetero structure in which an infrared-side active layer made of a GaAs-based or AlGaAs-based material is interposed between an infrared-side first conductivity type cladding layer and an infrared-side second conductivity type cladding layer having a ridge for current injection, the red-side second conductivity type cladding layer, and the infrared-side second conductivity type cladding layer are made of an AlGaInP-based material, where a first electrode formed over the red-side second conductivity type cladding layer has a width W the first electrode and the second electrode are mounted on the semiconductor laser device by a connection to a submount made of AlN, Si, or SiC.