Patents by Inventor John E. Koroshetz

John E. Koroshetz 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).

  • Variable pulse repetition frequency passively Q-switched laser
    Patent number: 7319708
    Abstract: A passive Q-switch element is disclosed that permits operating a laser with a variable pulse repetition frequency (PRF). The Q-switch comprises two wedges of material, one made from saturable absorber material, the other from transparent material, with the two wedges mounted together to form a constant optical thickness block. By translating the block transversely to a laser beam the amount of saturable absorber material seen by the laser beam is altered and as a result the PRF of the laser is varied.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 15, 2008
    Assignee: Lockheed Martin Coherent Technologies, Inc.
    Inventors: John E. Koroshetz, Josef R. Unternahrer