Patent ID: 11876348
Assignee: APPLE INC.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 18:
19. An emitter structure comprising:
an emitter cluster comprising plurality of emitters with a common bottom distributed Bragg reflector (DBR) layer shared with each emitter in the plurality of emitters and a top DBR layer, the top DBR layer including an oxide aperture (OA) layer, alternating aluminum-containing layers and non-aluminum-containing layers, including a closest aluminum-containing layer above the OA layer and a closest aluminum-containing layer below the OA layer, each emitter comprising:
an inside mesa trench in the top DBR layer, and defining a top DBR layer mesa structure laterally interior to the inside mesa trench; and
wherein the OA layer for each top DBR layer mesa structure includes a non-oxidized portion and an oxidized portion extending from opposite sidewalls of the inside mesa trench;
wherein the closest aluminum-containing layer above the OA layer and along the opposite sidewalls of the inside mesa trench is oxidized more than the closest aluminum-containing layer below the OA layer and along the opposite sidewalls of the inside mesa trench.