Patents by Inventor Kristian Gotthold Baumann

Kristian Gotthold Baumann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Enhanced surface-emitting photonic device
    Patent number: 7912106
    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.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Kristian Gotthold Baumann, Rainer Friedbert Mahrt, Nikolaj Moll, Thilo Hermann Curt Stöferle
  • ENHANCED SURFACE-EMITTING PHOTONIC DEVICE
    Publication number: 20090147818
    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.
    Type: Application
    Filed: December 5, 2007
    Publication date: June 11, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kristian Gotthold Baumann, Rainer Friedbert Mahrt, Nikolaj Moll, Thilo Hermann Stoferle