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:
Apr. 21, 2026
Filed:
Sep. 26, 2022
Trumpf Photonic Components Gmbh, Ulm, DE;
Ulrich Weichmann, Aachen, DE;
Holger Joachim Moench, Vaals, NL;
TRUMPF PHOTONIC COMPONENTS GMBH, Ulm, DE;
Abstract
A Vertical Cavity Surface Emitting Laser (VCSEL) includes an optical resonator with a first reflector, a second reflector, and an active region for laser emission arranged between the first reflector and the second reflector, and an electrical contact arrangement configured to provide an electrical drive current to electrically pump the optical resonator. The optical resonator further comprises a loss layer introducing optical and electrical losses to increase wavelength shift of the laser emission when varying the drive current. The optical losses introduced by the loss layer are higher than the sum of the optical losses in remaining regions outside the active region. The electrical losses introduced by the loss layer are higher by a factor of at least 5 than the electrical losses in the remaining regions.