Patents by Inventor John P. Loehr

John P. Loehr 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).

  • Microcavity surface emitting laser
    Patent number: 6266357
    Abstract: A three-dimensional waveguiding structure for a microcavity surface-emitting laser is described in which native aluminum oxide layers provide control of intracavity waveguiding and the laser optical mode structure of the emitted beam. Microcavity lasers described herein account for the blueshift of the emission wavelength as the laser lateral dimensions are reduced to or below the emission wavelength.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: July 24, 2001
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Stewart Feld, John P. Loehr, James A. Lott, Michael J. Noble