Patent ID: 7016385
Filing Date: 2006-03-21
Classification: B82Y,H01S

Abstract:
1. A semiconductor laser device wherein an n-type (Al e Ga 1-e ) f In 1-f P (0≦e≦1, 0≦f≦1) cladding layer, an active layer comprising a plurality of stacked layers of AlGaInP type material, a p-type (Al x Ga 1-x ) y In 1-y P (0≦x≦1, 0≦y≦1) cladding layer, and a p-type (Al p Ga 1-p ) q In 1-q P (0≦p≦1) 0≦q≦1) intermediate band gap layer are stacked in this order on a substrate, the semiconductor laser device having a current injection region and a current non-injection region, wherein the semiconductor laser device further comprises: an oxide layer formed on a surface of the p-type (Al a p-type Al a p-type Al