Patent ID: 9025633
Filing Date: 2015-05-05
Classification: B82Y,H01S

Abstract:
1. An optical device comprising: a ridge semiconductor laser element formed on a substrate; a first insulating film coating a lateral wall portion of a ridge structure of the ridge semiconductor laser element; an aperture portion formed by removing a part of the first insulating film formed on the ridge structure; and a second insulating film coating the ridge structure from above the first insulating film in an end portion region of the ridge structure, the second insulating film having a density lower than a density of the first insulating film, wherein the first insulating film coats the lateral wall portion and the substrate within an extent from the lateral wall portion to a border line closer to the lateral wall portion than an end portion at which a scribe line is formed and the semiconductor laser element is separated, wherein the second insulating film coats the substrate within an extent from the end portion, at which the semiconductor laser element is separated, to the border line, and wherein the second insulating film coats the end portion region including a laser emitting end face's side of the ridge semiconductor laser element and a reflecting end face's side opposite to the laser emitting end face.