Patents by Inventor Vassil P. Kruglii

Vassil P. Kruglii 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).

  • Laser frequency stabilization by active resonator length regulation
    Patent number: 4908829
    Abstract: The moment of switching of the system for active thermoregulation of a resonator length of a frequency stabilized laser first switches on the feed of the laser tube and then continuously measuring the electric signal which depends on the laser resonator temperature. The signal is compared with a reference electric signal and at equalizing of both signals is switched the system for active thermoregulation of the resonator length of the frequency stabilized laser. The electric signal depending on laser resonator temperature is proportional to the rate of its temperature expansion.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: March 13, 1990
    Assignee: Su "Kliment Ohridski"
    Inventors: Vassil P. Kruglii, Stanislav P. Shurulinkov