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:
Jun. 18, 2013
Filed:
May. 04, 2009
Philipp Henning Gerlach, Blaustein, DE;
Roger King, Ulm, DE;
Marcel Franz Christian Schemmann, Maria Hoop, NL;
Philipp Henning Gerlach, Blaustein, DE;
Roger King, Ulm, DE;
Marcel Franz Christian Schemmann, Maria Hoop, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a vertical cavity surface emitting laser device comprising a VCSEL with a monolithically integrated photodiode. The photodiode () is formed of a layer sequence of a first n-doped region (), a p-doped region (), an intrinsic region () and a second n-doped region () of a semiconductor material. The photodiode () and the laser share a common electrode, which is realized as an Ohmic n-contact () at said first n-doped region (). The proposed device allows less complex manufacturing, resulting in lower manufacturing costs.