Patent ID: 6743702
Filing Date: 2004-06-01
Classification: H01L,H01S

Abstract:
A nitride-based semiconductor laser device comprising:a nitride-based semiconductor layer formed on an active layer; and an electrode layer formed on said nitride-based semiconductor layer, wherein said electrode layer includes: a first p-side electrode layer containing a material having strong adhesive force to said nitride-based semiconductor layer, and a second p-side electrode layer, formed on said first p-side electrode layer, having weaker adhesive force to said nitride-based semiconductor layer than said first p-side electrode layer for reducing contact resistance of said electrode layer with respect to said nitride-based semiconductor layer wherein: said first p-side electrode layer contains at least one material selected from a group consisting of Pt, Hf and Zr; and said second p-side electrode layer contains Pd.