Laser light source

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 radiat...

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Bibliographic Details
Main Authors Dini Dimitri, Eichler Christoph, Schmid Wolfgang, Reill Wolfgang, Lell Alfred, Tautz Soenke
Format Patent
LanguageEnglish
Published 31.01.2017
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary: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.
Bibliography:Application Number: US201514951149