Pulsed Holography of Rapidly Moving Dust Particles

Abstract

Alumina particles ranging from minor dimension 25 microns to major dimension 185 microns are given 20-120 m/s velocities via a carrier gas through a 500 microns nozzle. Off-axis image plane holograms are constructed of the dust. Resolution to 6 to 10 microns is achieved and image subtraction via a Pockel's cell external to the laser cavity is employed to restore contrast loss in double exposures. Particle velocities are measured in double exposures. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1981
Accession Number
ADA109085

Entities

People

  • Keith M. Hagenbush

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Air Force
  • Amplifiers
  • Contrast
  • Diameters
  • Electric Fields
  • Flow
  • Gas Flow
  • Geometry
  • Holograms
  • Holography
  • Laser Resonators
  • Lasers
  • Light Amplifiers
  • Materials
  • Measurement
  • Universities

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Medical Imaging.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers