Patent ID: 11942762
Assignee: SUZHOU LEKIN SEMICONDUCTOR CO., LTD.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 11:
12. A surface light emitting laser device comprising:
a first reflection layer;
an active layer on the first reflection layer;
an aperture region having a first insulating layer and an aperture and disposed on the active layer;
a second reflection layer on the aperture region;
an AlGa-based transition layer disposed between the active layer and the second reflection layer and having an Al composition graded; and
a second insulating layer disposed between the active layer and the second reflection layer,
wherein the second insulating layer extends from an end of the first insulating layer in the aperture direction and is disposed on the first insulating layer,
wherein the second insulating layer includes a first sublayer disposed on an upper surface of the first insulating layer, and a second sublayer disposed on a lower surface of the first insulating layer, such that the first insulating layer is positioned between the first sublayer and the second sublayer of the second insulating layer, and
wherein a second length of the first sublayer is shorter than a first length of the first insulating layer, and a third length of the second sublayer is shorter than the second length of the first sublayer.