Patent ID: 7194013
Filing Date: 2007-03-20
Classification: H01S

Abstract:
1. A GaN-based semiconductor laser device comprising: in one laser chip, an insulating substrate, a first striped structure on said insulating substrate and having a first relaxation oscillation frequency fr wherein a length of said first striped structure is less than a length of said second striped structure, and an average of a front-face reflectance and a back-face reflectance of said first striped structure is greater than an average of a front-face reflectance and a back-face reflectance of said second striped structure, such that the first relaxation oscillation frequency fr wherein a trench is between said first striped structure and said second striped structure, with said insulating substrate being exposed at a bottom of said trench such that a current path between said first striped structure and said second striped structure does not exist.