High-energy laser-assisted imaging through vaporizing aerosols Metadata

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Title

  • Main Title High-energy laser-assisted imaging through vaporizing aerosols

Creator

  • Author: Zardecki, A.
    Creator Type: Personal
  • Author: Gerstl, S.A.W.
    Creator Type: Personal

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico

Date

  • Creation: 1988-02-01

Language

  • English

Description

  • Content Description: The degradation of image quality due to multiple scattering in a turbid medium is analyzed various conditions of illumination. The emphasis is on the forward-peaked multiple scattering effects, which can adequately be described by the small-angle approximation. In the case of incoherent illumination, the modulation transfer function (MTF) can be given explicity both in the low- and high-frequency limits. For scattering with smaller degree of anisotropy, the MTF should be imputed numerically by considering numerical by considering solutions to the equation of radiative transfer with a line or point source. As the beam power increases, the turbid medium becomes modified by its interactions with the beam, thus affecting the image resolution. In this nonlinear transport regime (flux levels of the order of 10/sup 6/ Wcm/sup 2/ and higher) the propagation leads actually to beam narrowing. In the context of the imaging problem, an apparent paradosical situation in which the image of a point source narrows down as the high-energy laser (HEL) beam propagates is discussed. 14 refs., 12 figs
  • Physical Description: 13 pages

Subject

  • STI Subject Categories: 656000 -- Condensed Matter Physics
  • Keyword: Aerosols
  • STI Subject Categories: 75 Condensed Matter Physics, Superconductivity And Superfluidity
  • Keyword: Processing
  • Keyword: Sols 640300* -- Atomic, Molecular & Chemical Physics
  • STI Subject Categories: 74 Atomic And Molecular Physics
  • Keyword: Scattering
  • Keyword: Resolution
  • Keyword: Colloids
  • Keyword: Dispersions
  • Keyword: Spatial Resolution
  • Keyword: Lasers
  • Keyword: Nonlinear Problems
  • Keyword: Radiation Transport
  • Keyword: Image Processing
  • Keyword: Small Angle Scattering

Source

  • Conference: SPIE's technical symposium on optics, electro-optic and sensors, Orlando, FL, USA, 4 Apr 1988

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE88007911
  • Report No.: LA-UR-88-669
  • Report No.: CONF-880462-6
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5228947
  • Archival Resource Key: ark:/67531/metadc1074230
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