Patents by Inventor Kameron Larsen

Kameron Larsen 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).

  • Mercury trapped ion frequency standard for ultra-stable reference applications
    Patent number: 9766593
    Abstract: An atomic clock including an ion trap assembly, a C-field coil positioned for generating a first magnetic field in the interrogation region of the ion trap assembly, a compensation coil positioned for generating a second magnetic field in the interrogation region, wherein the combination of the first and second magnetic fields produces an ion number-dependent second order Zeeman shift (Zeeman shift) in the resonance frequency that is opposite in sign to an ion number-dependent second order Doppler shift (Doppler shift) in the resonance frequency, the C-field coil has a radius selected using data indicating how changes in the radius affect an ion-number-dependent shift in the resonance frequency, such that a difference in magnitude between the Doppler shift and the Zeeman shift is controlled or reduced, and the resonance frequency, including the adjustment by the Zeeman shift, is used to obtain the frequency standard.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: September 19, 2017
    Assignee: California Institute of Technology
    Inventors: Eric A. Burt, Robert L. Hamell, Blake C. Tucker, Kameron Larsen, Robert L. Tjoelker
  • MERCURY TRAPPED ION FREQUENCY STANDARD FOR ULTRA-STABLE REFERENCE APPLICATIONS
    Publication number: 20150249456
    Abstract: An atomic clock including an ion trap assembly, a C-field coil positioned for generating a first magnetic field in the interrogation region of the ion trap assembly, a compensation coil positioned for generating a second magnetic field in the interrogation region, wherein the combination of the first and second magnetic fields produces an ion number-dependent second order Zeeman shift (Zeeman shift) in the resonance frequency that is opposite in sign to an ion number-dependent second order Doppler shift (Doppler shift) in the resonance frequency, the C-field coil has a radius selected using data indicating how changes in the radius affect an ion-number-dependent shift in the resonance frequency, such that a difference in magnitude between the Doppler shift and the Zeeman shift is controlled or reduced, and the resonance frequency, including the adjustment by the Zeeman shift, is used to obtain the frequency standard.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 3, 2015
    Inventors: Eric A. Burt, Robert L. Hamell, Blake C. Tucker, Kameron Larsen, Robert L. Tjoelker