Patent ID: 8023545
Filing Date: 2011-09-20
Classification: B82Y,H01S

Abstract:
1. A semiconductor light emitting device, comprising a conductive semiconductor substrate on which at least the following layers are stacked in the order listed below: a first clad layer; an active layer which includes at least one highly strained quantum well layer having a compressive strain amount not less than 1% with respect to the conductive semiconductor substrate; and a second clad layer, wherein the apparatus further comprises a strain buffer layer adjacently formed on the active layer and includes a layer having a compressive strain amount not greater than the strain amount of the active layer, wherein sum S of the product of the compressive strain amount and layer thickness of each layer included in the strain buffer layer represented by Formula (1) below satisfies Formula (2) below: where, Δi and Ti are the compressive strain amount (%) and layer thickness (μm) of i