Patents by Inventor Zhi M. Liao

Zhi M. 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).

  • Flattened mode cylindrical and ribbon fibers and amplifiers
    Publication number: 20040247272
    Abstract: Large area mode operation of fibers with Strehl-ratio-optimizing flat-topped output beams is enabled. The approach entails both refractive index profile engineering and gain profile engineering to realize fiber structures that while supporting several transverse modes only allow a preferred flat-topped mode to lase due to the modal gain discrimination that is engineered in during the fabrication of the structure.
    Type: Application
    Filed: September 30, 2003
    Publication date: December 9, 2004
    Applicant: The Regents of the University of California
    Inventors: Jay W. Dawson, Raymond J. Beach, Stephen A. Payne, Michael D. Feit, Christopher P.J. Barty, Zhi M. Liao