Patents by Inventor Robert C. Fukuda

Robert C. Fukuda 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).

  • Gasdynamic phase-conjugated mirror
    Patent number: 4869578
    Abstract: A gasdynamic gas flow forms a lightguide wherein an incident coherent light wavefront, such as a laser beam, is reflected to produce a backward-travelling phase conjugated light wavefront. The nonlinear optical phase conjugation process occurs when the incident light intensity is large enough to achieve the intensity threshold required to initiate the phase conjugation process.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: September 26, 1989
    Inventor: Robert C. Fukuda
  • Side-arm phase-conjugated laser
    Patent number: 4709368
    Abstract: A phase-conjugated Q-switched laser resonator. The resonator contains a laser active material and a polarizer/quarter-wave plate combination in a starter cavity. The polarizer optically couples one plane of polarization of laser radiation into a side arm containing a self-switching stimulated scattering phase-conjugate mirror.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: November 24, 1987
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Robert C. Fukuda, Suresh Chandra