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. 01, 2016
Filed:
Nov. 07, 2013
Fraunhofer-gesellschaft Zur Forderung Der Angewandten Forschung E.v., Munich, DE;
Rwth Aachen, Aachen, DE;
Peter Russbueldt, Herzogenrath, DE;
Guido Rotarius, Vaals, NL;
Thomas Sartorius, Aachen, DE;
Johannes Weitenberg, Aachen, DE;
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich, DE;
RWTH AACHEN, Aachen, DE;
Abstract
An optically end-pumped amplifier with a plate-shaped optical gain medium has a plurality of pump laser units for optically pumping the gain medium through at least one of the narrow side surfaces thereof. The pump laser units are designed such that the pump laser radiation, upon passing through the gain medium, has an elongated beam cross section having a short axis and a long axis running parallel to the main surfaces of the gain medium and propagates freely through the gain medium with respect to the short axis. They are arranged such that in each case the principal axes of the beam bundles of the pump laser units impinge on one of the pumped side surfaces in a plane perpendicular to the short axis at an angle to one another, wherein the beam cross sections of the beam bundles are superimposed on one another.