Patent ID: 9124071
Filing Date: 2015-09-01
Classification: B82Y,H01S

Abstract:
1. A nitride semiconductor laser element comprising an n-type semiconductor layer, a p-type semiconductor layer, and an active layer between the n-type semiconductor layer and the p-type semiconductor layer, the n-type semiconductor layer comprising an n-side optical guide layer, the active layer comprising two or more well layers, and at least one barrier layer provided between the well layers, the barrier layer comprising a barrier layer having band gap energy higher than that of the n-side optical guide layer, the p-type semiconductor layer comprising an electron barrier layer having band gap energy higher than that of all barrier layers comprised in the active layer, a p-side optical guide layer being provided between a final well layer and the electron barrier layer, the final well layer being a well layer nearest to the p-type semiconductor layer of the two or more well layers, the p-side optical guide layer comprising: