Accession Number : ADD004585

Title :   Method and Apparatus for Beam Sampling by Aoustic Pulses.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Frank,Konrad ; Klon,Peter F

Report Date : 22 Feb 1977

Pagination or Media Count : 6

Abstract : This patent is on a method and apparatus for simultaneously sampling and scanning a portion of a laser beam with acoustic energy. An acoustic pulse is propagated across the light beam and the pressure variations which comprise the pulse form a diffraction grating for deflecting the light beam over its volume of interaction with the pulse. As the pulse propagates, successive parts of the beam are deflected and an effective scan is performed. Focussing optics focus the diffracted beam on a photodetector and analyzing and controlling electronics is provided. Additionally, several embodiments for providing a two-dimensional scan of the laser beam portion are disclosed.

Descriptors :   *Patents, *Optical scanning, *Acoustooptics, Laser beams, Diffraction gratings, Acoustic fields, Interactions, Deflection, Pulses, Sampling

Subject Categories : Lasers and Masers
      Acoustics
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE