Patents by Inventor Katsuhiko Shimomura

Katsuhiko Shimomura 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).

  • Solid state laser apparatus
    Patent number: 5430754
    Abstract: A solid state laser apparatus is capable of suppressing a mode hopping phenomena by restricting longitudinal modes except a fundamental mode, thereby providing a very stable output. The solid state laser apparatus includes such components as a semiconductor laser emitting a pumping radiation for exciting a lasant material, a lens systems for focusing the pumping radiation and an optical resonator including a concave mirror. The lasant material may be formed of Nd:YVO.sub.4 doped with approximately 1 at % of Nd and a non-linear optical element may be formed of KTiOPO.sub.4 with an inclined c-axis.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: July 4, 1995
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kenji Suzuki, Akira Eda, Katsuhiko Shimomura