Patent ID: 9197035
Filing Date: 2015-11-24
Classification: B82Y,G11B,H01S

Abstract:
1. A semiconductor laser device comprising: an n-type clad layer; a first p-type clad layer; a ridge stripe including a second p-type clad layer formed into a ridge stripe shape on the opposite surface of the first p-type clad layer from the n-type clad layer; an active layer interposed between the n-type clad layer and the first p-type clad layer; and a current-blocking layer formed on side surfaces of the ridge stripe, wherein a first ridge width of a surface of the second p-type clad layer existing on the same side as the first p-type clad layers is greater than or equal to 3.0 μm and less than or equal to 4.5 μm, and a second ridge width of a surface of the second p-type clad layer existing at the opposite side from the first p-type clad layer is greater than or equal to 2.0 μm, wherein the semiconductor laser device is a three-time-grown semiconductor laser device manufactured by forming a p-type contact layer after the current-blocking layer is formed, wherein the current-blocking layer is formed of an n-type (Al wherein the n-type clad layer, the first p-type clad layer and the second p-type clad layer are formed of a Al