Theoretical analysis for temporal phase-shifting of volume moiré tomography via double cross gratings

Nan Sun; Keding Yan; Liang Xue; Shouyu Wang

doi:10.1117/12.2064918

11 November 2014 Theoretical analysis for temporal phase-shifting of volume moiré tomography via double cross gratings

Nan Sun, Keding Yan, Liang Xue, Shouyu Wang

Proceedings Volume 9271, Holography, Diffractive Optics, and Applications VI; 927123 (2014) https://doi.org/10.1117/12.2064918
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

Volume Moiré Tomography (VMT) is an important technique to diagnose the flow field. In this Letter, the characteristic of temporal phase-shifting is analyzed for VMT. When the distance between two cross gratings is not on the Talbot distance, the phase-shifting factors are existed between moiré patterns of different orders. Especially, when the distance conforms to the sub-Talbot distance, the phase-shifting factors are maximum. This characteristic of temporal phaseshifting could be used for real 3-D flow fields reconstruction in the future.

Citation Download Citation

Nan Sun, Keding Yan, Liang Xue, and Shouyu Wang "Theoretical analysis for temporal phase-shifting of volume moiré tomography via double cross gratings", Proc. SPIE 9271, Holography, Diffractive Optics, and Applications VI, 927123 (11 November 2014); https://doi.org/10.1117/12.2064918

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