Laser light source and method for producing a laser light source

US9407063B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Alfred Lell · Maxhütte-Haidhof, DE
• Christoph Eichler · Donaustauf, DE
• Wolfgang Schmid · Regensburg, DE
• Soenke Tautz · Tegernheim, DE
• Wolfgang Reill · Pentling, DE
• Dimitri Dini · Soest, DE

Key dates

• Filing date: Feb 20, 2015
• Grant date: Aug 2, 2016
• Expiry date: Feb 20, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S2301/166
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A laser light source comprises, in particular, a semiconductor layer sequence (10) having an active region (45) and a radiation coupling-out area (12) having a first partial region (121) and a second partial region (122) different than the latter, and a filter structure (5), wherein the active region (45) generates, during operation, coherent first electromagnetic radiation (51) having a first wavelength range and incoherent second electromagnetic radiation (52) having a second wavelength range, the coherent first electromagnetic radiation (51) is emitted by the first partial region (121) along an emission direction (90), the incoherent second electromagnetic radiation (52) is emitted by the first partial region (121) and by the second partial region (122), the second wavelength range comprises the first wavelength range, and the filter structure (5) at least partly attenuates the incoherent second electromagnetic radiation (52) emitted by the active region along the emission direction (90).