Patent ID: 9246306
Filing Date: 2016-01-26
CPC Classification: H01S

Claim Text:
1. A semiconductor laser element comprising: a substrate; a semiconductor layer formed on a front surface of the substrate; a first electrode formed on a back surface of the substrate; a second electrode formed on a front surface of the semiconductor layer; and at least one mark configured to allow reading of predetermined information, the at least one mark being formed in a position on the surface on which the second electrode is formed, spaced apart from the second electrode, wherein the at least one mark is made of a metal material and has a thickness smaller than a thickness of the second electrode, wherein the second electrode has a connection portion configured to be connected to an external power supply, the connection portion having a larger width than a remainder of the second electrode, wherein the mark is separated from the connection portion in a length direction of the second electrode, wherein the front surface of the semiconductor layer has a ridge, and wherein the connection portion is arranged on one of two portions of a surface region of the semiconductor layer sectioned by the ridge, and the mark is arranged on the same portion of the surface region as the connection portion.