Patent ID: 11870217
Assignee: LUMENTUM OPERATIONS LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A vertical cavity surface emitting laser (VCSEL) device, comprising:
a substrate layer;
a first set of epitaxial layers for a bottom-emitting VCSEL disposed on the substrate layer, the first set of epitaxial layers comprising:
a first set of mirrors; and
at least one first active layer; and

a second set of epitaxial layers for a top-emitting VCSEL disposed on the first set of epitaxial layers for the bottom-emitting VCSEL, the second set of epitaxial layers comprising:
a second set of mirrors; and
at least one second active layer,
wherein the top-emitting VCSEL and the bottom-emitting VCSEL are configured to emit light in opposite light emission directions.