Optical Probing of Photoacoustic Propagation for Noncontact Measurement of Flows, Temperatures and Chemical Compositions.

Abstract

Noncontact techniques of optical probing of photoacoustic pulses provide new opportunities for ultrasonic and/or spectroscopic measurement in hostile environments (e.g., flames, corrosive fluids, dangerous aerosols, etc.) and also basic understanding of photoacoustic generation processes. This paper provides examples of such applications in the new field of 'optical ultrasonics' (whereby ultrasonic determinations of flows, temperatures, etc., are measured optically), including 'optical ultrasonic spectroscopy' (whereby ultrasonic dispersion and relaxations are measured optically).

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Document Details

Document Type
Technical Report
Publication Date
Oct 21, 1983
Accession Number
ADA134129

Entities

People

  • A. C. Tam
  • B. Sullivan
  • H. Coufal
  • W. Zapka

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Acoustic Velocity
  • Acoustic Waves
  • Chemistry
  • Detection
  • Fluids
  • Laser Beams
  • Laser Pulses
  • Mach Number
  • Materials
  • Measurement
  • Military Research
  • Physical Properties
  • Refractive Index
  • Spectroscopy
  • Transducers
  • Waves

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Metallurgy
  • Optical Physics and Photonics.