Patents by Inventor Yukata Shimoji

Yukata Shimoji 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).

  • Multi element single mode microchip lasers
    Patent number: 6026102
    Abstract: A microchip laser is formed from at least one portion of laser material and at least one nonlinear crystal. The laser material and nonlinear crystal are in physical contact with each other and an angled surface of either the laser material or the nonlinear crystal forms an air-spaced etalon between the laser material and the nonlinear crystal. The axis of the microchip laser passes through the etalon formed between the laser material and the nonlinear crystal. The etalon in the laser cavity produces a single mode output. Additionally, the nonlinear crystal within the cavity may operate, in conjunction with a polarization dependent gain cross-section in the laser material, as a birefringent filter to reduce the bandwidth of laser emission from a broadband active laser material.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: February 15, 2000
    Inventor: Yukata Shimoji