Patent ID: 11909175
Assignee: APPLE INC.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 7:
8. An optoelectronic device, comprising:
a semiconductor substrate;
a laser, epitaxially grown on the semiconductor substrate and having a laser resonant cavity extending between a front side output surface parallel to the semiconductor substrate and a back side output surface perpendicular to the semiconductor substrate;
a semiconductor device, epitaxially grown on the semiconductor substrate and separated from the back side output surface of the laser by a single trench having a first vertical wall abutting the laser and a second vertical wall abutting the semiconductor device; and
at least two coatings comprising a first coating and a second coating, each of the first coating and the second coating on at least one of the first vertical wall or the second vertical wall, and only one of the first coating or the second coating extending over the front side output surface of the laser; wherein,
the laser resonant cavity has a horizontal portion parallel to the semiconductor substrate;
each of the first vertical wall and the second vertical wall is oriented perpendicular to the semiconductor substrate; and
the first coating has a first reflectivity different from a second reflectivity of the second coating.