Patents by Inventor Zhi Ming Liao

Zhi Ming Liao 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
    Patent number: 7038844
    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: Grant
    Filed: September 29, 2003
    Date of Patent: May 2, 2006
    Assignee: The Regents of the University of California
    Inventors: Jay W. Dawson, Zhi Ming Liao, Raymond J. Beach, Alexander D. Drobshoff, Stephen A. Payne, Deanna M. Pennington, Wolfgang Hackenberg, Domenico Bonaccini Calia, Luke Taylor