Patents by Inventor Todd A. Barrick

Todd A. Barrick 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).

  • Heterodyne photomixer spectrometer with receiver photomixer driven at different frequency than source photomixer
    Patent number: 8482739
    Abstract: A heterodyne photomixer spectrometer comprises a receiver photomixer that is driven at a different frequency than the source photomixer, thereby maintaining the coherent nature of the detection, eliminating etalon effects, and providing not only the amplitude but also the phase of the received signal. The heterodyne technique can be applied where the source and receiver elements are components of a waveguide thereby forming an on-chip heterodyne spectrometer.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 9, 2013
    Assignee: Sandia Corporation
    Inventors: Michael C. Wanke, Kevin Fortier, Eric A. Shaner, Todd A. Barrick