Patents by Inventor Deanna Pennington

Deanna Pennington 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).

  • HIGH POWER 938 NANOMETER FIBER LASER AND AMPLIFIER
    Publication number: 20050168804
    Abstract: An optical fiber amplifier includes a length of silica optical fiber having a core doped with neodymium, a first cladding and a second cladding each with succeeding lower refractive indices, where the first cladding diameter is less than 10 times the diameter of the core. The doping concentration of the neodymium is chosen so that the small signal absorption for 816 nm light traveling within the core is less than 15 dB/m above the other fiber losses. The amplifier is optically pumped with one laser into the fiber core and with another laser into the first cladding.
    Type: Application
    Filed: September 29, 2003
    Publication date: August 4, 2005
    Inventors: Jay Dawson, Zhi Liao, Raymond Beach, Alexander Drobshoff, Stephen Payne, Deanna Pennington, Wolfgang Hackenburg, Domenico Calia, Luke Taylor
  • Programmable phase plate for tool modification in laser machining applications
    Patent number: 6717104
    Abstract: A system for laser machining includes a laser source for propagating a laser beam toward a target location, and a spatial light modulator having individual controllable elements capable of modifying a phase profile of the laser beam to produce a corresponding irradiance pattern on the target location. The system also includes a controller operably connected to the spatial light modulator for controlling the individual controllable elements. By controlling the individual controllable elements, the phase profile of the laser beam may be modified into a desired phase profile so as to produce a corresponding desired irradiance pattern on the target location capable of performing a machining operation on the target location.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: April 6, 2004
    Assignee: The Regents of the University of California
    Inventors: Charles A. Thompson, Jr., Michael W. Kartz, James M. Brase, Deanna Pennington, Michael D. Perry
  • Programmable phase plate for tool modification in laser machining applications
    Publication number: 20020190040
    Abstract: A system for laser machining includes a laser source for propagating a laser beam toward a target location, and a spatial light modulator having individual controllable elements capable of modifying a phase profile of the laser beam to produce a corresponding irradiance pattern on the target location. The system also includes a controller operably connected to the spatial light modulator for controlling the individual controllable elements. By controlling the individual controllable elements, the phase profile of the laser beam may be modified into a desired phase profile so as to produce a corresponding desired irradiance pattern on the target location capable of performing a machining operation on the target location.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 19, 2002
    Applicant: The Regents of the University of California
    Inventors: Charles A. Thompson, Michael W. Kartz, James M. Brase, Deanna Pennington, Michael D. Perry