Infrared Photothermal Radiometry.

Abstract

Infrared Photothermal Radiometry (IPTR) is a sensitive technique for noncontract spectroscopy and inspection. A modulated beam of photons (or other particles) produces temperature transients in a sample; the corresponding transients in the infrared thermal radiation emitted from the sample are analyzed. This can provide absolute absorption coefficients, as well as information on thermal diffusivity, layered structure, and dimensions. Variations of IPTR are possible with continuously-modulated or pulsed excitation, and with transmission or back-scattering detection. These variations are reviewed. The recent technique of pulsed IPTR with back-scattering detection is described in more detail, and some important single-ended remote sensing applications are discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1984
Accession Number
ADA140562

Entities

People

  • A. C. Tam

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Chemistry
  • Detection
  • Detectors
  • Diffusivity
  • Electromagnetic Radiation
  • Heat Energy
  • Laser Applications
  • Laser Beams
  • Lasers
  • Light (Electromagnetic Radiation)
  • Materials
  • Military Research
  • Radiation
  • Thermal Diffusivity
  • Thermal Radiation

Fields of Study

  • Physics

Readers

  • Thermal Physics or Thermal Science.
  • Thin Film Deposition Science.