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Proceedings Paper

Applications of digital holography in visualized measurement of acoustic and flow fields
Author(s): Jianlin Zhao; Enpu Li; Weiwei Sun; Jianglei Di
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Paper 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.

Paper Details

Date Published: 14 April 2010
PDF: 8 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752221 (14 April 2010); doi: 10.1117/12.851688
Show Author Affiliations
Jianlin Zhao, Northwestern Polytechnical Univ. (China)
Enpu Li, Northwestern Polytechnical Univ. (China)
Weiwei Sun, Northwestern Polytechnical Univ. (China)
Jianglei Di, Northwestern Polytechnical Univ. (China)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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