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- W4309083863 abstract "Lateral Shearing Interferometer (LSI), as a kind of self-interference technology, can achieve high-precision wavefront sensing and phase imaging. Quadriwave Lateral Shearing Interferometry (QWLSI) divides the wavefront into four transverse dislocated beams by a checkerboard phase grating. The lateral-shearing interferogram of the four waves occurs on the image plane, and then the test wavefront is reconstructed. The reconstruction precision is determined by the shear ratio, thus the variable shear ratio can meet the requirement of the different measurement accuracy. Here we proposed variable-ratio lateral-shearing interferometry with a vortex-splitting grating. Different from the checkerboard grating, topological charge is first encoded into grating and is then optimized to obtain two shear ratios in the same interference setup. The proposed variable-ratio lateral-shearing setup including of only an axial motion device is robust, effective and variable precision for wavefront sensing." @default.
- W4309083863 created "2022-11-21" @default.
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- W4309083863 date "2022-11-15" @default.
- W4309083863 modified "2023-09-26" @default.
- W4309083863 title "Variable-ratio lateral-shearing interferometry with a vortex-splitting grating" @default.
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- W4309083863 doi "https://doi.org/10.1117/12.2638353" @default.
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