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Proceedings Paper

Application of Hartmann-Shack wavefront sensor in tomographic reconstruction of flow field
Author(s): Yun Dai; Ende Li; Haiying Wang; Zeping Yang; Yudong Zhang
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Paper Abstract

Light waves passing through the turbulent flow are aberrated by refractive index fluctuations in the flow. Refractive index fluctuations arise from density fluctuations driven by temperature and pressure variations in turbulent flow. Hartmann-Shack wavefront sensor can directly sense these aberrations and also can reconstruct the 3-dimensional structure of the refractive index distribution in a turbulent flow field with tomographic reconstruction technique. A novel method for measuring the 3-dimensional structure of the refractive index distribution in a turbulent flow field combining Hartmann-Shack wavefront sensor with tomographic reconstruction is proposed in this paper. Hartmann-Shack wavefront sensor is used for measurement of an optical wave front after passing through a flow field and the refractive index distribution is reconstructed by computed tomography technique. The principle of the tomographic reconstruction of the flow field based on the Hartmann-Shack wavefront sensor is described briefly. The static symmetric and dynamic asymmetric experimental results are presented. The experimental results indicate that Hartmann-Shack wave-front sensor combining with tomographic reconstruction technique has a potential application for material and flow field investigation regions.

Paper Details

Date Published: 8 June 2006
PDF: 8 pages
Proc. SPIE 6018, 5th International Workshop on Adaptive Optics for Industry and Medicine, 60180Q (8 June 2006); doi: 10.1117/12.669290
Show Author Affiliations
Yun Dai, Institute of Optics and Electronics (China)
Graduate School of Chinese Academy of Sciences (China)
Ende Li, Institute of Optics and Electronics (China)
Haiying Wang, Institute of Optics and Electronics (China)
Zeping Yang, Institute of Optics and Electronics (China)
Yudong Zhang, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 6018:
5th International Workshop on Adaptive Optics for Industry and Medicine
Wenhan Jiang, Editor(s)

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