Patent ID: 7585689
Filing Date: 2009-09-08
Classification: H01S

Abstract:
1. A method for manufacturing a semiconductor laser device in which a first conductivity type cladding layer, an active layer, a second conductivity type first cladding layer, and a second conductivity type second cladding layer are laminated in this order on a semiconductor substrate by crystal growth, the second conductivity type second cladding layer is processed into a plurality of stripe-shaped ridge structure portions, and a laser bar is formed by cleavage in a direction orthogonal to a longitudinal direction of the ridge structure portions, the method comprising: arranging a plurality of columns of the ridge structure portions that are aligned in the longitudinal direction of the ridge structure portions at predetermined intervals, in a direction perpendicular to the longitudinal direction of the ridge structure portions with spaces therebetween; cleaving a region where the end portion of each of the ridge structure portions and the end portion of the adjacent ridge structure portion overlap each other.