The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2013
Filed:
Nov. 19, 2009
Applicants:
Hans-christoph Eckstein, Jena, DE;
Uwe D. Zeitner, Weimar, DE;
Wolfgang Schmid, Regensburg, DE;
Inventors:
Assignees:
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E. V., Munich, DE;
OSRAM Opto Semiconductors GmbH, Regensburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An edge emitting semiconductor laser includes a semiconductor body having a wave guide area. The wave guide area comprises a lower cover layer, a lower wave guide layer, an active layer for generating laser radiation, an upper wave guide layer and an upper cover layer. The wave guide area also includes at least one structured laser radiation scattering area in which a lateral base laser radiation mode experiences less scattering losses than the radiation of higher laser modes.