Patents by Inventor Thomas G. Spence

Thomas G. Spence 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).

  • VAPOR CELL FOR ATOMIC PHYSICS SENSORS
    Publication number: 20220196444
    Abstract: One embodiment includes a vapor cell for an atomic physics-based sensor system. The vapor cell includes a cell wall formed from an approximately transparent material. The cell wall can enclose an alkali metal vapor and can include an inner surface and an outer surface. The vapor cell can also include at least one structural feature provided on at least one of the inner surface and the outer surface of the cell wall and extending along a portion of the respective at least one of the inner surface and the outer surface.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: ERIC A. IMHOF, THOMAS G. SPENCE, STEVEN RYAN JEFFERTS, MICHAEL D. BULATOWICZ
  • Analog detection for cavity lifetime spectroscopy
    Patent number: 6532071
    Abstract: An analog detection system for determining a ring-down rate or decay rate 1/&tgr; of an exponentially decaying ring-down beam issuing from a lifetime or ring-down cavity during a ring-down phase. Alternatively, the analog detection system determines a build-up rate of an exponentially growing beam issuing from the cavity during a ring-up phase. The analog system can be employed in continuous wave cavity ring-down spectroscopy (CW CRDS) and pulsed CRDS (P CRDS) arrangements utilizing any type of ring-down cavity including ring-cavities and linear cavities.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: March 11, 2003
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Richard N. Zare, Charles C. Harb, Barbara A. Paldus, Thomas G. Spence
  • Analog detection for cavity lifetime spectroscopy
    Publication number: 20010003482
    Abstract: An analog detection system for determining a ring-down rate or decay rate 1/&tgr; of an exponentially decaying ring-down beam issuing from a lifetime or ring-down cavity during a ring-down phase. Alternatively, the analog detection system determines a build-up rate of an exponentially growing beam issuing from the cavity during a ring-up phase. The analog system can be employed in continuous wave cavity ring-down spectroscopy (CW CRDS) and pulsed CRDS (P CRDS) arrangements utilizing any type of ring-down cavity including ring-cavities and linear cavities.
    Type: Application
    Filed: January 4, 2001
    Publication date: June 14, 2001
    Inventors: Richard N. Zare, Charles C. Harb, Barbara A. Paldus, Thomas G. Spence
  • Analog detection for cavity lifetime spectroscopy
    Patent number: 6233052
    Abstract: An analog detection system for determining a ring-down rate or decay rate 1/&tgr; of an exponentially decaying ring-down beam issuing from a lifetime or ring-down cavity during a ring-down phase. Alternatively, the analog detection system determines a build-up rate of an exponentially growing beam issuing from the cavity during a ring-up phase. The analog system can be employed in continuous wave cavity ring-down spectroscopy (CW CRDS) and pulsed CRDS (P CRDS) arrangements utilizing any type of ring-down cavity including ring-cavities and linear cavities.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 15, 2001
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Richard N. Zare, Charles C. Harb, Barbara A. Paldus, Thomas G. Spence