Patents by Inventor Yasushi Obayashi

Yasushi Obayashi 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).

  • Phase matching in harmonic laser apparatus including a MgO:LiNbO.sub.3 crystal at room temperature
    Patent number: 5084879
    Abstract: In response to fundamental laser light, a LiNbO.sub.3 crystal emits second harmonic laser light. A phase matching angle of 90 degrees is obtained at room temperature by using a LiNbO.sub.3 crystal doped with MgO at a proper concentration. In the case where fundamental laser light of 1064 nm is applied from a Nd-YAG laser, the concentration of MgO should be about 1.0 mol % or about 7.5 mol %.
    Type: Grant
    Filed: June 21, 1990
    Date of Patent: January 28, 1992
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hideo Suzuki, Takashi Suzuki, Yasushi Obayashi