Patents by Inventor Malcolm Dunn

Malcolm Dunn 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).

  • Detector/imager
    Patent number: 7995204
    Abstract: A back scatter absorption detector/imager having an optical parametric device for generating sensing radiation, the optical parametric device having a nonlinear medium (NLC) and a pump wave laser source, the nonlinear medium (NLC) being able to generate a signal and an idler wave in response to being stimulated with the pump wave, thereby to generate sensing radiation, and a detector (D) for detecting any sensing radiation back-scattered from a target area, characterized in that the pump wave laser source and the nonlinear medium (NLC) are provided in the same optical cavity.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: August 9, 2011
    Assignee: The University Court of the University of St. Andrews
    Inventors: David Stothard, Malcolm Dunn, Cameron Rae
  • Coating for optimising output coupling of em radiation
    Patent number: 7626756
    Abstract: A coating between a nonlinear crystal and a silicon prism coupler, prevents transmission of radiation scattered within the crystal by filtering out frequencies outside the silicon bandgap to avoid free carrier absorption, but transmits THz frequencies that correspond to the bandgap.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: December 1, 2009
    Assignee: The University Court of the University of St. Andrews
    Inventors: Malcolm Dunn, Cameron F. Rae, Tom J. Edwards, David J. M. Stothard, David Walsh
  • DETECTOR/IMAGER
    Publication number: 20090141281
    Abstract: A back scatter absorption detector/imager having an optical parametric device for generating sensing radiation, the optical parametric device having a nonlinear medium (NLC) and a pump wave laser source, the nonlinear medium (NLC) being able to generate a signal and an idler wave in response to being stimulated with the pump wave, thereby to generate sensing radiation, and a detector (D) for detecting any sensing radiation back-scattered from a target area, characterised in that the pump wave laser source and the nonlinear medium (NLC) are provided in the same optical cavity.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 4, 2009
    Inventors: David Stothard, Malcolm Dunn, Cameron Rae
  • Coating for Optimising Output Coupling of Em Radiation
    Publication number: 20080298757
    Abstract: A coating (10) between a nonlinear crystal (5) and a silicon prism coupler (9), prevents transmission of radiation scattered within the crystal (5) by filtering out frequencies outside the silicon bandgap to avoid free carrier absorption, but transmits THz frequencies that correspond to the bandgap.
    Type: Application
    Filed: January 26, 2007
    Publication date: December 4, 2008
    Inventors: Malcolm Dunn, Cameron F. Rae, Tom J. Edwards, David J.M. Stothard, David Walsh