Patents by Inventor Larry K. Smith

Larry K. Smith 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).

  • Yb:FAP and related materials, laser gain medium comprising same, and laser systems using same
    Patent number: 5280492
    Abstract: An ytterbium doped laser material remarkably superior to all others, including Yb:YAG, comprises Ytterbium doped apatite (Yb:Ca.sub.5 (PO.sub.4).sub.3 F) or Yb:FAP, or ytterbium doped crystals that are structurally related to FAP. The new laser material is used in laser systems pumped by diode pump sources having an output near 0.905 microns or 0.98 microns, such as InGaAs and AlInGaAs, or other narrowband pump sources near 0.905 microns or 0.98 microns. The laser systems are operated in either the conventional or ground state depletion mode.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: January 18, 1994
    Assignee: The United States Department of Energy
    Inventors: William F. Krupke, Stephen A. Payne, Lloyd L. Chase, Larry K. Smith