The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2022
Filed:
May. 18, 2020
Government of the United States of America, As Represented BY the Secretary of Commerce, Gaithersburg, MD (US);
Jason John Gorman, Silver Spring, MD (US);
Lei Shao, Clarksburg, MD (US);
GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, Gaithersburg, MD (US);
Abstract
A pulsed laser interferometer includes: a pulsed laser; a vibration controller that produces a vibration control signal that controls a vibrational frequency and vibrational amplitude of a structural member; an interferometer controller; a pathlength control stage that changes an optical pathlength for laser pulses; a pathlength reflector that moves in concert with the pathlength control stage to change the optical pathlength of propagation for the laser pulses; a light pulse detector that produces a light pulse detector signal; an interference light detector that produces an interference frequency signal; a signal mixer that produces a reference frequency signal; and a phase-sensitive detector that produces a vibrational amplitude signal and a vibrational phase signal from the interference frequency signal referenced to the reference frequency signal.