Patents by Inventor Dmitriy TOKAR

Dmitriy TOKAR 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).

  • Patent number: 12607693
    Abstract: An optical magnetometer system and method for operation thereof are described. The optical magnetometer system comprises: at least one light source emitting one or more illumination beams and scanning frequency of illumination beams over a selected range; at least one vapor cell having alkali atoms positioned within path of the illumination beam; a detection unit position to collect beam passing though the vapor cell; at least one thermal unit positioned to vary temperature of the vapor cell; and a controller configured and operable for obtaining detection data from the detection unit and for operating said at least one thermal unit in a feedback loop, and wherein said feedback loop being directed at maintaining a relation between optical intensity measured at one of more measurement points associated with selected frequencies and detuning level at the one or more measurement points from Larmor frequency of the optical magnetometer system.
    Type: Grant
    Filed: February 20, 2024
    Date of Patent: April 21, 2026
    Assignee: Elta Systems Ltd.
    Inventors: Igor Shcherback, Dmitriy Tokar
  • Publication number: 20250251471
    Abstract: A magnetic field strength measurement system including: a vapor chamber holding alkali metal vapor; a light source unit configured to supply a first circularly polarized light beam and a second circularly polarized light beam to the vapor chamber, the first circularly polarized beam and the second circularly polarized beam having opposite circular polarization; a retroflection unit including at least one optical element and configured to return the first circularly polarized beam and the second circularly polarized beam to the vapor chamber, reversing direction, while maintaining polarization, of the first circularly polarized beam and the second circularly polarized beam; at least one detector configured to measure light associated with the first circularly polarized beam and the second circularly polarized beam emitted from the vapor chamber and to produce at least one measurement signal; circuitry configured to: provide a modulating signal to the light source unit, the modulating signal configured to modul
    Type: Application
    Filed: January 29, 2025
    Publication date: August 7, 2025
    Inventors: Igor SHCHERBACK, Yossi ROSENZWEIG, Dmitriy TOKAR
  • Publication number: 20250237720
    Abstract: The present disclosure provides a magnetometer for measuring a magnetic field B in the vicinity thereof. The magnetometer includes a vapor cell comprising atomic vapor; an optical processor for receiving a light beam and directing said light beam, as a probe light beam, to enter the vapor cell with a certain predetermined intensity I1 and a certain predetermined polarization state P1 to serve for interacting with at least one type of Alkali-like atoms in the atomic vapor of the vapor cell, for probing a Larmor frequency of precession thereof; and a detector for detecting the light beam after interaction with the atomic vapor to generate signals/data indicative of said Larmor frequency. The optical processor includes an optical depolarizer and a polarizer arranged respectively successively (e.g., not necessarily consecutively) with respect to a propagation direction of said light beam, along a propagation path of the light beam through the optical processor.
    Type: Application
    Filed: April 9, 2025
    Publication date: July 24, 2025
    Inventors: Igor SHCHERBACK, Dmitriy TOKAR, Ronen WOLF, Avi ELMALEM
  • Patent number: 12298367
    Abstract: The present disclosure provides a magnetometer for measuring a magnetic field B in the vicinity thereof. The magnetometer includes a vapor cell comprising atomic vapor; an optical processor for receiving a light beam and directing said light beam, as a probe light beam, to enter the vapor cell with a certain predetermined intensity I1 and a certain predetermined polarization state P1 to serve for interacting with at least one type of Alkali-like atoms in the atomic vapor of the vapor cell, for probing a Larmor frequency of precession thereof; and a detector for detecting the light beam after interaction with the atomic vapor to generate signals/data indicative of said Larmor frequency. The optical processor includes an optical depolarizer and a polarizer arranged respectively successively (e.g., not necessarily consecutively) with respect to a propagation direction of said light beam, along a propagation path of the light beam through the optical processor.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: May 13, 2025
    Assignee: Elta Systems Ltd.
    Inventors: Igor Shcherback, Dmitriy Tokar, Ronen Wolf, Avi Elmalem
  • Publication number: 20240280653
    Abstract: An optical magnetometer system and method for operation thereof are described. The optical magnetometer system comprises: at least one light source emitting one or more illumination beams and scanning frequency of illumination beams over a selected range; at least one vapor cell having alkali atoms positioned within path of the illumination beam; a detection unit position to collect beam passing though the vapor cell; at least one thermal unit positioned to vary temperature of the vapor cell; and a controller configured and operable for obtaining detection data from the detection unit and for operating said at least one thermal unit in a feedback loop, and wherein said feedback loop being directed at maintaining a relation between optical intensity measured at one of more measurement points associated with selected frequencies and detuning level at the one or more measurement points from Larmor frequency of the optical magnetometer system.
    Type: Application
    Filed: February 20, 2024
    Publication date: August 22, 2024
    Inventors: Igor SHCHERBACK, Dmitriy TOKAR
  • Publication number: 20230243901
    Abstract: The present disclosure provides a magnetometer for measuring a magnetic field B in the vicinity thereof. The magnetometer includes a vapor cell comprising atomic vapor; an optical processor for receiving a light beam and directing said light beam, as a probe light beam, to enter the vapor cell with a certain predetermined intensity I1 and a certain predetermined polarization state P1 to serve for interacting with at least one type of Alkali-like atoms in the atomic vapor of the vapor cell, for probing a Larmor frequency of precession thereof; and a detector for detecting the light beam after interaction with the atomic vapor to generate signals/data indicative of said Larmor frequency. The optical processor includes an optical depolarizer and a polarizer arranged respectively successively (e.g., not necessarily consecutively) with respect to a propagation direction of said light beam, along a propagation path of the light beam through the optical processor.
    Type: Application
    Filed: January 23, 2023
    Publication date: August 3, 2023
    Inventors: Igor SHCHERBACK, Dmitriy TOKAR, Ronen WOLF, Avi ELMALEM