Patents Assigned to THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENT BY THE SECRETARY OF THE AIR FORCE
  • Optical rubidium atomic frequency standard
    Patent number: 10684591
    Abstract: An optical atomic clock includes a fiber-coupled electro-optic modulator to phase modulate and suppress residual amplitude modulation of a frequency-doubled laser; a rubidium-enriched vapor cell configured to perform a two-photon transition of rubidium atoms to generate a fluorescence signal from the laser; and a differential lock mechanism to stabilize a frequency of the fluorescence signal to a resonance frequency of the two-photon transition of the rubidium atoms.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: June 16, 2020
    Assignee: THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENT BY THE SECRETARY OF THE AIR FORCE
    Inventors: John H. Burke, Nathan D. Lemke, Gretchen R. Phelps, Kyle W. Martin, Benjamin K. Stuhl