Full Field Visualization of Surface and Bulk Acoustic Waves Using Heterodyne Holographic Interferometry

Abstract

The objective of this research has been to apply optical holographic techniques coupled with electronic signal and image processing to provide quantitative, full field measurements of acoustic wave disturbances. Building on work performed previously at Johns Hopkins and in its second year under the current contract to the Office of Naval Research, this program has sought to establish the limits of sensitivity with which surface acoustic waves might be measured and mapped. Toward this end, the effects film resolution on overall sensitivity have been examined. Also, significant efforts have taken place to extend heterodyne holographic measurements to the examination of acoustic energy flow in optically transparent bulk materials.

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Document Details

Document Type
Technical Report
Publication Date
Sep 15, 1988
Accession Number
ADA199018

Entities

People

  • James W. Wagner
  • Robert E. Green Jr.

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Contracts
  • Detection
  • Detectors
  • Engineered Materials
  • Films
  • Image Processing
  • Image Reconstruction
  • Interferometry
  • Materials
  • Materials Science
  • Measurement
  • Physics
  • Refractive Index
  • Surface Acoustic Waves
  • Ultrasounds
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Image Processing and Computer Vision.
  • Research Science/Academic Research

Technology Areas

  • Microelectronics