Journal
OPTICS EXPRESS
Volume 22, Issue 9, Pages 10559-10569Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.010559
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Funding
- National Natural Science Foundation of China [91216301, 11232008, 11072033, 11372037]
- Program for New Century Excellent Talents in University [NCET-12-0036]
- Natural Science Foundation of Beijing, China [3122027]
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Quantitatively measuring a dynamic liquid surface often presents a challenge due to high transparency, fluidity and specular reflection. Here, a novel Transmission-Lattice based Geometric Phase Analysis (TLGPA) method is introduced. In this method, a special lattice is placed underneath a liquid to be tested and, when viewed from above, the phase of the transmission-lattice image is modulated by the deformation of the liquid surface. Combining this with multi-directional Newton iteration algorithms, the dynamic deformation field of the liquid surface can be calculated from the phase variation of a series of transmission-lattice images captured at different moments. The developed method has the advantage of strong self-adaption ability to initial lattice rotational errors and this is discussed in detail. Dynamic 3D ripples formation and propagation was investigated and the results obtained demonstrated the feasibility of the method. (C) 2014 Optical Society of America
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