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. 07, 2017
Filed:
Jun. 17, 2014
Osram Opto Semiconductors Gmbh, Regensburg, DE;
Alvaro Gomez-Iglesias, Regensburg, DE;
Harald König, Bernhardswald, DE;
Christian Lauer, Regensburg, DE;
Abstract
An edge-emitting semiconductor laser includes a semiconductor structure having a waveguide layer with an active layer, the waveguide layer extending in a longitudinal direction between first and second side facets of the semiconductor structure, the semiconductor structure has a tapering region adjacent to the first side facet, a thickness of the waveguide layer in the tapering region increases longitudinally, the waveguide layer is arranged between first and second cladding layers, a thickness of the second cladding layer in the tapering region of the semiconductor structure increases longitudinally, the tapering region includes first and second subregions, the first subregion is arranged closer to the first side facet than the second subregion, thickness of the waveguide layer increases longitudinally in the first subregion, thickness of the waveguide layer is constant in the longitudinal direction in the second subregion, and thickness of the second cladding layer increases longitudinally in the second subregion.