Some discussion on high-speed-imaging-based optical coherent measurement

Y. Fu; J. Yuan; Y. J. Xu; M. Guo; H. Liu; K. Yan; C. Yang; H. Miao

doi:10.1117/12.2016663

22 June 2013 Some discussion on high-speed-imaging-based optical coherent measurement

Y. Fu, J. Yuan, Y. J. Xu, M. Guo, H. Liu, K. Yan, C. Yang, H. Miao

Proceedings Volume 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013); 876917 (2013) https://doi.org/10.1117/12.2016663
Event: International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 2013, Singapore, Singapore

Abstract

Optical coherent detection is a precise and non-contact method for measurement of tiny deformation or movement of an object. In the last century, it can only be used on the static or quasi-static measurement of deformation between two statuses. Recently it has been applied on dynamic measurement with the help of high-speed camera. The advantage of this technique is that it can offer a full-field measurement. However, due to the limited capturing rate of high-speed camera, its capability in temporal domain cannot meet the requirements of many applications. In this study, several issues in high-speed-camera-based optical interferometry are discussed. For example, introduction of carrier in temporal and spatial domain, signal processing in temporal-frequency domain, and the introduction of dual-wavelength interferometry in dynamic measurement. The discussion leads to a clue to select suitable technique to fulfill whole-field dynamic measurement at different ranges.

Citation Download Citation

Y. Fu, J. Yuan, Y. J. Xu, M. Guo, H. Liu, K. Yan, C. Yang, and H. Miao "Some discussion on high-speed-imaging-based optical coherent measurement ", Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 876917 (22 June 2013); https://doi.org/10.1117/12.2016663

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