Patent ID: 9397472
Filing Date: 2016-07-19
CPC Classification: H01S

Claim Text:
1. A method of manufacturing a semiconductor laser device, the method comprising the steps of: preparing the semiconductor laser bar body including a top surface, an undersurface, two mutually opposing facets, and two mutually opposing side faces, the semiconductor laser bar body having a semiconductor laser element; performing a coating step to form a coating film on at least one of the facets; and performing, after the coating step, a division step to scribe on the semiconductor laser bar body and to divide the semiconductor laser bar body into a plurality of semiconductor laser devices; wherein a groove is formed on the at least one of the facets by denting the at least one of the facets, or is formed in the coating film by exposing a part of the at least one of the facets, the groove extends from the top surface to the undersurface, when a direction in which the two side faces are arranged is assumed to be a width direction, a width of the groove is equal to or less than a maximum value of a variation in a position of the scribing division, and the division step is intended to perform scribing on the top surface or the undersurface so that a scribed track or an extended line of the scribed track meets the groove.