Patents by Inventor Edmund H. Linfield

Edmund H. Linfield 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).

  • Terahertz radiation sources and methods
    Patent number: 7498593
    Abstract: The invention relates to improved terahertz radiation sources and associated methods. A terahertz radiation source is described, comprising: an emitter (202) comprising a semiconductor material (12); a pair of electrodes (204a,b) adjacent a face of said semiconductor, said pair of electrodes defining a gap between said electrodes; a pulsed light source input for illuminating said semiconductor to excite photo-carriers in said semiconductor to generate terahertz radiation; and a radiation collector (212) to collect said terahertz radiation; and wherein said radiation collector is disposed on the same side of said semiconductor as said electrodes. A related method of providing terahertz radiation is also described.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: March 3, 2009
    Assignee: Cambridge University Technical Services Limited
    Inventors: Yao-chun Shen, Edmund H. Linfield, Alexander G. Davies