Patents by Inventor Alan M. Cox

Alan M. Cox 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).

  • Optical apparatus and method
    Patent number: 8315289
    Abstract: An optical apparatus comprising a gain medium exhibiting polarisation dependent absorption along two axes, the gain medium having a weakly absorbing axis and a strongly absorbing axis, an optical pump source arranged to direct pump light towards a first face of the gain medium such that the pump light entering the gain medium has a component of its polarisation parallel to the weakly absorbing axis, a polarisation modifying apparatus and one or more reflectors which are together arranged to modify the polarisation of pump light which exits the gain medium through a second face of the gain medium, and to direct the pump light with modified polarisation back towards said second face of the gain medium.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: November 20, 2012
    Assignee: Laser Quantum Limited
    Inventors: Alan M. Cox, Jean-Charles Cotteverte
  • Optical apparatus and method
    Publication number: 20090225798
    Abstract: An optical apparatus comprising a gain medium exhibiting polarisation dependent absorption along two axes, the gain medium having a weakly absorbing axis and a strongly absorbing axis, an optical pump source arranged to direct pump light towards a first face of the gain medium such that the pump light entering the gain medium has a component of its polarisation parallel to the weakly absorbing axis, a polarisation modifying apparatus and one or more reflectors which are together arranged to modify the polarisation of pump light which exits the gain medium through a second face of the gain medium, and to direct the pump light with modified polarisation back towards said second face of the gain medium.
    Type: Application
    Filed: January 5, 2009
    Publication date: September 10, 2009
    Inventors: Alan M. Cox, Jean-Charles Cotteverte
  • Photorefractive composite
    Patent number: 6221535
    Abstract: A photorefractive composite comprises a charge transport matrix and an electrooptic dye having an aliphatic group of four or more carbon atoms.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: April 24, 2001
    Assignee: The Victoria University of Manchester
    Inventors: Alan M. Cox, Richard D. Blackburn, Frances A. Wade, David P. West, Terence A. King, David Leigh