公开(公告)号：US20240258764A1

公开(公告)日：2024-08-01

申请号：US18561240

申请日：2022-05-23

Applicant: ams-OSRAM International GmbH

Inventor： Markus Keidler ,  Martin Mueller

IPC: H01S5/02 ,  B23K26/53 ,  B23K101/40 ,  H01S5/02315 ,  H01S5/0237

CPC classification number: H01S5/0201 ,  B23K26/53 ,  H01S5/02315 ,  H01S5/0237 ,  B23K2101/40

Abstract: In an embodiment a method includes providing at least one semiconductor wafer, which has a semiconductor layer sequence and a plurality of single diode elements arranged next to and connected to one another, generating thermally induced predetermined breaking locations in the semiconductor layer sequence between the single diode elements using first laser radiation, arranging the semiconductor wafer on a carrier, and connecting the semiconductor wafer to the carrier, the single diode elements being at least partially separated from one another at the thermally induced predetermined breaking locations, wherein thermally induced predetermined breaking locations are generated in the carrier using second laser radiation so that the carrier has a plurality of carrier elements connected to one another, and wherein the carrier elements are separated from one another at the predetermined breaking locations by a connecting process.

公开(公告)号：US20230420919A1

公开(公告)日：2023-12-28

申请号：US18253185

申请日：2020-12-03

Applicant: ams-OSRAM International GmbH

Inventor： Christian Lauer ,  Martin Mueller ,  Michael Furitsch ,  Harald König

IPC: H01S5/20 ,  H01S5/34

CPC classification number: H01S5/2031 ,  H01S5/3404 ,  H01S2301/14

Abstract: In an embodiment a radiation-emitting laser diode includes a waveguide layer sequence having an active region configured to generate electromagnetic radiation with a preferred polarization direction, a first waveguide layer of a first doping type and a second waveguide layer of a second doping type, wherein the active region is arranged between the first waveguide layer and the second waveguide layer, wherein refractive indices of the waveguide layer sequence form a first effective refractive index for a transverse electric (TE) mode with its electric field oscillating in a first transverse direction and a second effective refractive index for a transverse magnetic (TM) mode with its electric field oscillating in a second transverse direction, and wherein an effective refractive index difference of the first effective refractive index and the second effective refractive index is at least 4·10−4.