Patent ID: 11916356
Assignee: LUMENTUM OPERATIONS LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 7:
8. A method of forming a vertical cavity surface emitting laser (VCSEL) array, comprising:
forming a plurality of VCSELs on or within a substrate,
wherein forming the plurality of VCSELs includes forming a first set of VCSELs and a second set of VCSELs that is randomly interleaved with the first set of VCSELS and that form a two-dimensional regular pattern of VCSELs; and

degrading a performance of the second set of VCSELs without degrading a performance of the first set of VCSELs,
wherein degrading the performance of the second set of VCSELs includes forming at least one degraded VCSEL in the second set of VCSELs, the at least one degraded VCSEL comprising one or more of:
a central current blocking implant, having an implant width less than a width of an active region of the degraded VCSEL, positioned substantially centrally with respect to a current confinement aperture of the degraded VCSEL,
an etched surface extending around dielectric via openings of the degraded VCSEL and to a depth approximately at a top surface of a top mirror of the degraded VCSEL,
or
a reduced via, etched through a dielectric passivation/mirror layer of the degraded VCSEL to expose a metal layer, the reduced via having a reduced size relative to other vias of the VCSELs in the first set of VCSELs.