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:
Jul. 02, 2019
Filed:
Feb. 12, 2015
Fraunhofer-gesellschaft Zur Forderung Der Angewandten Forschung E.v., Munich, DE;
Friedrich-schiller-universitat, Jena, DE;
Hans Jurgen Otto, Jena, DE;
Cesar Jauregui Misas, Jena, DE;
Jens Limpert, Jena, DE;
Andreas Tunnermann, Weimar, DE;
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich, DE;
FRIEDRICH-SCHILLER-UNIVERSITÄT, Jena, DE;
Abstract
The invention relates to an optical waveguide () as a laser medium or as a gain medium for high-power operation, wherein the optical waveguide () is an optical fiber, the light-guiding core of which, at least in sections, is doped with rare earth ions. It is an object of the invention to provide an optical waveguide as a laser or a gain medium, and a laser/amplifier combination realized therewith, in which the output signal of the laser or gain medium is better stabilized. The invention achieves this object by virtue of the maximum small signal gain of the optical waveguide () being up to 60 dB, preferably up to 50 dB, more preferably up to 40 dB, even more preferably up to 30 dB, on account of the concentration of the rare earth ions and/or the distribution thereof in the light-guiding core. Moreover, the invention relates to the use of such an optical waveguide as an amplifier fiber () in a laser/amplifier combination.