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

Jianlin Zhao; Enpu Li; Weiwei Sun; Jianglei Di

doi:10.1117/12.851688

14 April 2010 Applications of digital holography in visualized measurement of acoustic and flow fields

Jianlin Zhao, Enpu Li, Weiwei Sun, Jianglei Di

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 752221 (2010) https://doi.org/10.1117/12.851688
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

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.

Citation Download Citation

Jianlin Zhao, Enpu Li, Weiwei Sun, and Jianglei Di "Applications of digital holography in visualized measurement of acoustic and flow fields", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752221 (14 April 2010); https://doi.org/10.1117/12.851688

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