Patent · US Active

Method of producing a laser diode bar and laser diode bar

US11581707B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

Osram OLED GMBH · DE

Inventors

Clemens Vierheilig · Tegernheim, DE
Andreas Löffler · Neutraubling, DE
Sven Gerhard · Alteglofsheim, DE

Key dates

Filing date	May 19, 2021
Grant date	Feb 14, 2023
Priority date	—
Expiry date	Sep 21, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01S2301/176
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method of producing a laser diode bar includes producing a plurality of emitters arranged side by side, emitters each including a semiconductor layer sequence having an active layer that generates laser radiation, a p-contact on a first main surface of the laser diode bar and an n-contact on a second main surface of the laser diode bar opposite the first main surface, testing at least one optical and/or electrical property of the emitters, wherein emitters in which the optical and/or electrical property lies within a predetermined setpoint range are assigned to a group of first emitters, and emitters in which the at least one optical and/or electrical property lies outside the predetermined setpoint range are assigned to a group of second emitters, and electrically contacting first emitters, wherein second emitters are not electrically contacted so that they are not supplied with current during operation of the laser diode bar.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.