Patent ID: 6593602
Filing Date: 2003-07-15
Classification: H01L

Abstract:
An edge emission type semiconductor device, comprising:a substrate having a first output edge and a second reflection edge disposed in parallel with each other and a principal surface connecting the first output edge with the second reflection edge; an active layer formed on the principal surface and made of a semiconductor material that radiates light upon injection of carriers; a ridge-like region disposed on said active layer along a path interconnecting a point on the first output edge and a point on the second reflection edge, said ridge-like region being made of a semiconductor material having a refraction index smaller than a refraction index of said active layer, said ridge-like is region defining a waveguide, the path being disposed along the principal surface and including a first region on the side of the first output edge and a second region on the side of the second reflection edge, at an intersecting point of the first region and the first output edge, a first angle being taken between a normal to the first output edge directing toward the principal surface and the first region, and at an interconnecting point of the second region and the second reflection edge, a second angle smaller than the first angle being taken between a normal to the second reflection edge directing toward the principal surface and the second region; and electrodes for injecting current in a region of said active layer along the path.