Patent ID: 8340149
Filing Date: 2012-12-25
Classification: H01S

Abstract:
1. A vertical cavity surface emitting laser, comprising: a lower DBR layer; an upper DBR layer; an active layer existing between the lower DBR layer and the upper DBR layer; and a laser emitting region provided on a surface layer of the upper DBR layer, wherein: the upper DBR layer includes a doped first semiconductor multilayer film layer and an undoped second semiconductor multilayer film layer; an electrode provided on the upper DBR layer is formed in a region which is on an upper part of the first semiconductor multilayer film layer and is surrounded by the second semiconductor multilayer film layer; the laser emitting region is formed on a surface layer of the second semiconductor multilayer film layer; a surface layer of the first semiconductor multilayer film layer comprises a contact layer; the second semiconductor multilayer film layer is stacked on the contact layer; and wherein a continuous semiconductor single crystal having a lattice matched structure contains the first semiconductor multilayer film layer and the second semiconductor multilayer film layer.