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:
Nov. 04, 2025
Filed:
Aug. 05, 2021
Ferdinand-braun-institut Ggmbh Leibniz-institut Für Höchstfrequenztechnik, Berlin, DE;
Pietro Della Casa, Berlin, DE;
Mohamed Elattar, Berlin, DE;
Paul Crump, Berlin, DE;
Hans Wenzel, Berlin, DE;
Abstract
The present invention relates to a diode laser with a current block and, in particular, to a diode laser with a modified 'p-n-p' or “n-p-n” structure as a current block for reducing the tunneling probability. A diode laser according to the invention comprises an active layer and a layered current block formed outside the active layer, wherein the current block is made of a material doped in opposition to its surroundings for a spatially selective current injection of the active layer between an n-substrate and a p-contact; wherein the current block is separated from adjacent layers via an intrinsic outer layer.