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:
Mar. 22, 2011
Filed:
Dec. 05, 2007
Kristian Gotthold Baumann, Krailling, DE;
Rainer Friedbert Mahrt, Meilen, CH;
Nikolaj Moll, Zurich, CH;
Thilo Hermann Curt Stöferle, Zurich, CH;
Kristian Gotthold Baumann, Krailling, DE;
Rainer Friedbert Mahrt, Meilen, CH;
Nikolaj Moll, Zurich, CH;
Thilo Hermann Curt Stöferle, Zurich, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A surface-emitting photonic device including a structure disposed therein to enhance a performance thereof. The structure includes a two dimensionally periodic second order distributed feedback device (DFB) to emit diffraction limited outcoupled laser light having a predetermined wavelength along a propagation direction that is substantially normal to a plane of the DFB, and a first order distributed Bragg reflector (DBR) coplanar with, adjacent to and surrounding the DFB, a geometry of the DBR being selected such that a bandgap of the DBR is maximized and centered around the predetermined wavelength of the emitted light, a substrate, and either an optical gain layer, or a semi-conductor quantum well laser disposed within the substrate.