Pulsed Photothermal Radiometry for Remote Sensing of Spectroscopic and Physical Properties of Thin Film

Abstract

Photothermal Radiometry (PTR) is a sensitive technique for noncontact spectroscopy and inspection; a modulated beam of photons (or other particles) is used to produce temperature transients, and the corresponding transients in the infrared thermal radiation emitted form the sample are analyzed. This paper describes the recent experimental and theoretical developments of pulsed PTR (PPTR) with back-scattering detection. PPTR is useful for many types of noncontact measurements, including absolute absorption spectroscopy, excitation spectroscopy, and the monitoring of thickness layered structure, thermal contacts, and associated properties. Further more, these measurements can be made on difficult samples like opaque materials, powders, aerosols, gels, skin in-vivo, and so on.

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Document Details

Document Type
Technical Report
Publication Date
Dec 18, 1984
Accession Number
ADA149080

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

  • Chemistry
  • Detection
  • Detectors
  • Electromagnetic Radiation
  • Films
  • Heat Energy
  • Laser Beams
  • Materials
  • Military Research
  • New York
  • Physical Properties
  • Remote Sensing
  • Scattering
  • Spectroscopy
  • Thermal Diffusivity
  • Thermal Radiation
  • Thin Films

Fields of Study

  • Physics

Readers

  • Nanocomposite Materials Science
  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Pulsed Power and Plasma Physics.