Patents by Inventor Christopher J. FREDRICKSEN

Christopher J. FREDRICKSEN 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).

  • Radiation-defect mitigation in InAs/GaSb strained-layer superlattice infrared detectors and related methods
    Patent number: 11054312
    Abstract: An IR sensor device may include an IR image sensor having an array of IR sensing pixels, and a readout circuit coupled to the IR image sensor and configured to sense sequential images. The IR sensor device may include a controller coupled to the readout circuit and configured to cause the readout circuit to apply a voltage to the IR image sensor between sensing of the sequential images.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: July 6, 2021
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Leonid Chernyak, Robert E. Peale, Christopher J. Fredricksen, Jonathan Lee
  • RADIATION-DEFECT MITIGATION IN INAS/GASB STRAINED-LAYER SUPERLATTICE INFRARED DETECTORS AND RELATED METHODS
    Publication number: 20190234803
    Abstract: An IR sensor device may include an IR image sensor having an array of IR sensing pixels, and a readout circuit coupled to the IR image sensor and configured to sense sequential images. The IR sensor device may include a controller coupled to the readout circuit and configured to cause the readout circuit to apply a voltage to the IR image sensor between sensing of the sequential images.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 1, 2019
    Inventors: LEONID CHERNYAK, Robert E. PEALE, Christopher J. FREDRICKSEN, Jonathan LEE
  • Quantum cascade laser with autonomously aligned external cavity and related methods
    Patent number: 9250130
    Abstract: A quantum cascade laser (QCL) may include a QCL crystal having an emitting facet, and an active region adjacent the emitting facet, the emitting facet for providing an electromagnetic beam. The QCL may include an optical cavity comprising a mirror being external to the QCL crystal, and for redirecting the electromagnetic beam into the active region of the QCL crystal to provide optical feedback, and a driver circuit for driving the QCL crystal with a constant current. The QCL may include a controller coupled to the optical cavity and for dynamically and autonomously aligning the optical cavity based upon an error signal from the QCL crystal to maintain stable the optical feedback into the active region of the QCL crystal.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: February 2, 2016
    Assignee: UNIVERSITY OF CENTRAL FLORDIA RESEARCH FOUNDATION, INC.
    Inventors: Andrey V. Muraviev, Douglas Maukonen, Christopher J. Fredricksen, Robert E. Peale
  • QUANTUM CASCADE LASER WITH AUTONOMOUSLY ALIGNED EXTERNAL CAVITY AND RELATED METHODS
    Publication number: 20150070698
    Abstract: A quantum cascade laser (QCL) may include a QCL crystal having an emitting facet, and an active region adjacent the emitting facet, the emitting facet for providing an electromagnetic beam. The QCL may include an optical cavity comprising a mirror being external to the QCL crystal, and for redirecting the electromagnetic beam into the active region of the QCL crystal to provide optical feedback, and a driver circuit for driving the QCL crystal with a constant current. The QCL may include a controller coupled to the optical cavity and for dynamically and autonomously aligning the optical cavity based upon an error signal from the QCL crystal to maintain stable the optical feedback into the active region of the QCL crystal.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 12, 2015
    Inventors: Andrey V. MURAVIEV, Douglas MAUKONEN, Christopher J. FREDRICKSEN, Robert E. PEALE