Patents by Inventor Charles D. Nabors

Charles D. Nabors 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).

  • Efficient laser harmonic generation employing a low-loss external optical resonator
    Patent number: 5027361
    Abstract: TEM.sub.OOq laser radiation derived from a diode-pumped ring laser is directed into a faceted member of nonlinear optical material defining either a standing wave or ring monolithic optical resonator to generate harmonic laser radiation. The losses of the optical resonator, exclusive of the conversion loss to the harmonic, are made sufficiently low such that the dominant loss presented to the resonated mode of the optical resonator is the conversion loss to the generated harmonic. The reflectance of the input mirror of the optical resonator is impedance matched to the losses of the resonator including the harmonic conversion loss for optimum conversion efficiency. The length of the nonlinear optical material is shortened to the point where the bulk losses are less than ten times the sum of the surface and mirror losses, yielding conversion efficiencies of greater than 20 percent.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: June 25, 1991
    Assignee: Board of Trustees of Leland Stanford, Jr., University
    Inventors: William J. Kozlovsky, Charles D. Nabors, Robert L. Byer