Patents by Inventor Carter Turnbaugh

Carter Turnbaugh 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).

  • Use of optical polarization states to control a ponderomotive phase plate
    Patent number: 11990313
    Abstract: A ponderomotive phase plate, also called a laser phase plate or standing wave optical phase plate, has a first minor and a second minor that define an optical cavity. An electron beam passes through a focal spot of the optical cavity. A laser with variable polarization angle of laser light is coupled to the optical cavity. A standing wave of polarized laser light, with an anti-node at the focal spot of the optical cavity, causes variable modulation of the electron beam. The variable modulation of the electron beam is controllable by the variable polarization angle of the laser light. In a transmission electron microscope, an image plane receives the electron beam modulated by the standing wave optical phase plate. An image formed at the image plane is based on the variable polarization angle of the polarized laser light.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 21, 2024
    Assignee: The Regents of the University of California
    Inventors: Jeremy J. Axelrod, Carter Turnbaugh, Sara Campbell, Osip Schwartz, Robert M. Glaeser, Holger Mueller
  • USE OF OPTICAL POLARIZATION STATES TO CONTROL A PONDEROMOTIVE PHASE PLATE
    Publication number: 20220319803
    Abstract: A ponderomotive phase plate, also called a laser phase plate or standing wave optical phase plate, has a first minor and a second minor that define an optical cavity. An electron beam passes through a focal spot of the optical cavity. A laser with variable polarization angle of laser light is coupled to the optical cavity. A standing wave of polarized laser light, with an anti-node at the focal spot of the optical cavity, causes variable modulation of the electron beam. The variable modulation of the electron beam is controllable by the variable polarization angle of the laser light. In a transmission electron microscope, an image plane receives the electron beam modulated by the standing wave optical phase plate. An image formed at the image plane is based on the variable polarization angle of the polarized laser light.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 6, 2022
    Inventors: Jeremy J. Axelrod, Carter Turnbaugh, Sara Campbell, Osip Schwartz, Robert M. Glaeser, Holger Mueller