Applications of digital holography in visualized measurement of acoustic and flow fields

Jianlin Zhao, Enpu Li, Weiwei Sun, Jianglei Di

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Digital holography allows recording the hologram using digitally imaging devices such as CCD, and reconstructing the holographic image by numerically simulating the diffraction of the hologram. Its main advantages are by which one can directly obtain the complex amplitude distribution of the object field, so that more impersonally measure the detail information of the object field, such as the distribution of the refractive index changing in crystals induced by light irradiation, deformation of the object surface, particle distribution, as well as acoustic field, flow field and temperature distribution in air. In this paper, we summarize the principle and some of our experimental results on the applications of digital holography in visualized measurement of acoustic standing wave (acoustic levitation field), plasma plume and water flow (Karman vortex street) fields.

Original languageEnglish
Title of host publicationFourth International Conference on Experimental Mechanics
DOIs
StatePublished - 2010
Event4th International Conference on Experimental Mechanics - Singapore, Singapore
Duration: 18 Nov 200920 Nov 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7522
ISSN (Print)0277-786X

Conference

Conference4th International Conference on Experimental Mechanics
Country/TerritorySingapore
CitySingapore
Period18/11/0920/11/09

Keywords

  • Digital holography
  • Flow field
  • Interferogram
  • Karman vortex street
  • Phase difference
  • Plasma's plume
  • Sound pressure distribution
  • Visualized measurement

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