Patents by Inventor Charlie FANCHER

Charlie FANCHER 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).

  • SELF-LOCKED RYDBERG ATOM ELECTRIC FIELD SENSOR
    Publication number: 20240385232
    Abstract: A system for automatically locking a control laser in a Rydberg atomic sensor may comprise an atomic vapor cell, a probe laser configured to excite the atoms in the atomic vapor cell to an intermediate energy state, and a control laser configured to excite the one or more atoms in the atomic vapor cell from the intermediate energy state to a higher energy state. The light generated by the control laser may be dithered at a pre-determined frequency. The system further comprises a photodiode configured to convert light received from the vapor cell into an electrical signal, a lock-in amplifier configured to generate an error signal based on the electrical signal received from the photo diode and a received reference oscillation frequency, and a servo configured to receive the generated error signal from the lock-in amplifier and adjust a frequency of the control laser based on the received error signal.
    Type: Application
    Filed: July 15, 2024
    Publication date: November 21, 2024
    Applicants: The MITRE Corporation, The United States of America as Represented by the Secretary of the Army
    Inventors: Charlie FANCHER, Bonnie L. MARLOW, Kathryn NICOLICH, Kelly BACKES, Neel MALVANIA, Kevin Christopher COX, David Henry MEYER, Paul D. KUNZ, Joshua Cartwright HILL, William Knox HOLLAND
  • Self-locked Rydberg atom electric field sensor
    Patent number: 12038465
    Abstract: A system for automatically locking a control laser in a Rydberg atomic sensor may comprise an atomic vapor cell, a probe laser configured to excite the atoms in the atomic vapor cell to an intermediate energy state, and a control laser configured to excite the one or more atoms in the atomic vapor cell from the intermediate energy state to a higher energy state. The light generated by the control laser may be dithered at a pre-determined frequency. The system further comprises a photodiode configured to convert light received from the vapor cell into an electrical signal, a lock-in amplifier configured to generate an error signal based on the electrical signal received from the photo diode and a received reference oscillation frequency, and a servo configured to receive the generated error signal from the lock-in amplifier and adjust a frequency of the control laser based on the received error signal.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: July 16, 2024
    Assignees: The MITRE Corporation, The United States of America as Represented by the Secretary of the Army
    Inventors: Charlie Fancher, Bonnie L. Marlow, Kathryn Nicolich, Kelly Backes, Neel Malvania, Kevin Christopher Cox, David Henry Meyer, Paul D. Kunz, Joshua Cartwright Hill, William Knox Holland
  • SELF-LOCKED RYDBERG ATOM ELECTRIC FIELD SENSOR
    Publication number: 20230288465
    Abstract: A system for automatically locking a control laser in a Rydberg atomic sensor may comprise an atomic vapor cell, a probe laser configured to excite the atoms in the atomic vapor cell to an intermediate energy state, and a control laser configured to excite the one or more atoms in the atomic vapor cell from the intermediate energy state to a higher energy state. The light generated by the control laser may be dithered at a pre-determined frequency. The system further comprises a photodiode configured to convert light received from the vapor cell into an electrical signal, a lock-in amplifier configured to generate an error signal based on the electrical signal received from the photo diode and a received reference oscillation frequency, and a servo configured to receive the generated error signal from the lock-in amplifier and adjust a frequency of the control laser based on the received error signal.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 14, 2023
    Applicant: The MITRE Corporation
    Inventors: Charlie FANCHER, Bonnie L. MARLOW, Kathryn NICOLICH, Kelly BACKES, Neel MALVANIA