Patents by Inventor Bart H. McGuyer

Bart H. McGuyer 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).

  • Method for suppressing light shift in optical pumping systems
    Patent number: 7825736
    Abstract: The present invention relates to a method and system to suppress or eliminate light shift in an optical pumping system, such as an atomic clock. The method uses modulation of a radiation source, such as a radio frequency or microwave source, to simultaneously lock the frequency of the radiation source to an atomic resonance and lock the frequency of the optical pumping source in order to suppress or eliminate light shift. In one embodiment, the method of the present invention directly utilizes the out-of-phase channel of a lock-in amplifier to additionally lock an optical pumping source to a zero-light-shift frequency, where the in-phase channel is used to lock the frequency of the radiation source to an atomic resonance.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: November 2, 2010
    Assignee: Princeton University
    Inventors: Bart H. McGuyer, Yuan-Yu Jau, William Happer
  • METHOD FOR SUPPRESSING LIGHT SHIFT IN OPTICAL PUMPING SYSTEMS
    Publication number: 20100156547
    Abstract: The present invention relates to a method and system to suppress or eliminate light shift in an optical pumping system, such as an atomic clock. The method uses modulation of a radiation source, such as a radio frequency or microwave source, to simultaneously lock the frequency of the radiation source to an atomic resonance and lock the frequency of the optical pumping source in order to suppress or eliminate light shift. In one embodiment, the method of the present invention directly utilizes the out-of-phase channel of a lock-in amplifier to additionally lock an optical pumping source to a zero-light-shift frequency, where the in-phase channel is used to lock the frequency of the radiation source to an atomic resonance.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Bart H. McGuyer, Yuan- Yu Jau, William Happer