Invention Grant
- Patent Title: Laser light source
- Patent Title (中): 激光光源
-
Application No.: US14951149Application Date: 2015-11-24
-
Publication No.: US09559496B2Publication Date: 2017-01-31
- Inventor: Alfred Lell , Christoph Eichler , Wolfgang Schmid , Soenke Tautz , Wolfgang Reill , Dimitri Dini
- Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
- Applicant Address: DE Regensburg
- Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee: OSRAM Opto Semiconductors GmbH
- Current Assignee Address: DE Regensburg
- Agency: Cozen O'Connor
- Priority: DE102007061923 20071221; DE102008012859 20080306
- Main IPC: H01S5/00
- IPC: H01S5/00 ; H01S5/10 ; H01S5/028 ; H01S5/22

Abstract:
A laser light source, comprising a semiconductor layer sequence having an active region and a radiation coupling out area having first and second partial regions, and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation. The coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, and the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted by the active region along the emission direction. The filter structure comprises at least one first filter element disposed downstream of the semiconductor layer sequence in the emission direction and it has at least one layer comprising a material that is non-transparent to electromagnetic radiation.
Public/Granted literature
- US20160079733A1 Laser Light Source Public/Granted day:2016-03-17
Information query