Patent · US Active

Laser light source

US8858030B2 · kind B2 · utility

5Cited by

4References

19Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Adrian Stefan Avramescu · Regensburg, DE
Alfred Lell · Maxhütte-Haidhof, DE
Soenke Tautz · Tegernheim, DE
Andreas Breidenassel · Bad Abbach, DE

Key dates

Filing date	Apr 6, 2011
Grant date	Oct 14, 2014
Priority date	—
Expiry date	Aug 31, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01S2301/18
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A laser light source for emitting coherent electromagnetic radiation has a vertical far-field radiation profile, having a series of semiconductor layers for generating the coherent electromagnetic radiation. An active region is located on a substrate. The coherent electromagnetic radiation is emitted during operation in an emission direction at least from a main emission region of a radiation output surface, and the radiation output surface is formed by a side surface of the sequence of semiconductor layers. A filter element suppresses coherent electromagnetic radiation in the vertical far-field radiation profile. The radiation was generated during operation and emitted by an auxiliary emission region of the radiation output surface. The auxiliary emission region is vertically offset from and spatially separated from the main emission region.

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