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:
May. 22, 2018
Filed:
Jan. 12, 2017
Applicant:
Technische Universitaet Berlin, Berlin, DE;
Inventors:
Assignee:
Technische Universitaet Berlin, Berlin, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/183 (2006.01);
U.S. Cl.
CPC ...
H01S 5/18341 (2013.01); H01S 5/18361 (2013.01);
Abstract
A vertical cavity surface emitting laser comprising a first reflector, a second reflector comprising a layer stack of semiconductor or isolating layers, an active region arranged between the first and second reflectors, and an additional layer on top of the layer stack at the light output side, said additional layer forming an output interface of the laser, wherein the refractive index of the additional layer is smaller, equal to or larger than the smallest refractive index of the refractive indices of said layer stack.