Invention Grant
- Patent Title: Surface-emitting semiconductor laser chip
-
Application No.: US16964072Application Date: 2019-01-23
-
Publication No.: US11979000B2Publication Date: 2024-05-07
- Inventor: Tilman Rügheimer , Hubert Halbritter
- Applicant: OSRAM OLED GmbH
- Applicant Address: DE Regensburg
- Assignee: OSRAM OLED GMBH
- Current Assignee: OSRAM OLED GMBH
- Current Assignee Address: DE Regensburg
- Agency: MH2 TECHNOLOGY LAW GROUP LLP
- Priority: DE 2018101569.0 2018.01.24
- International Application: PCT/EP2019/051629 2019.01.23
- International Announcement: WO2019/145359A 2019.08.01
- Date entered country: 2020-07-22
- Main IPC: H01S5/00
- IPC: H01S5/00 ; H01S5/02 ; H01S5/024 ; H01S5/042 ; H01S5/183 ; H01S5/42

Abstract:
Surface-emitting semiconductor laser chip (1) comprising a carrier (20), a layer stack (10) arranged on the carrier (20) and having a layer plane (L) extending perpendicularly to the stacking direction (R), a front side contact (310) and a rear side contact (320), in which in operation a predetermined distribution of a current density (I) is achieved by means of current constriction in the layer stack (10), wherein in the carrier (20) an electrical through-connection (200) is provided, which extends from a bottom surface (20a) of the carrier (20) facing away from the layer stack (10) to a surface of the carrier (20) facing the layer stack (10), and the distribution of the current density (I) is significantly influenced by the shape and size of the cross-section of the through-connection (200) parallel to the layer plane (L) on the surface facing the layer stack.
Public/Granted literature
- US20210050710A1 SURFACE-EMITTING SEMICONDUCTOR LASER CHIP Public/Granted day:2021-02-18
Information query