From Event: SPIE Optical Engineering + Applications, 2016
Phase retrieval is a simple and concise way of reconstructing wavefront, especially the method based on single far field formed by just a lens. However, for the symmetry of Zernike polynomial aberrations, light with different wavefront could form the same far-field intensity distribution. The distribution of reconstructed wavefront is likely to be quite different from the real one. In other words, it suffers in the multi-solution problem. A kind of wavefront reconstruction method based on quadrant binary phase plate is proposed. Incident light is modulated by a first-order Modified-Walshfunction pattern quadrant binary phase mask, which violates the special symmetries. Simulation experiments show that this method can retrieval random wavefront distributions accurately. It provides a practical technical solution for precise wavefront sensing with single far field image.
Shuai Wang, Ping Yang, Lizhi Dong, and Bing Xu, "Wavefront reconstruction based on quadrant binary phase plate with single far field," Proc. SPIE 9982, Unconventional Imaging and Wavefront Sensing XII, 998203 (Presented at SPIE Optical Engineering + Applications: August 31, 2016; Published: 20 September 2016); https://doi.org/10.1117/12.2237707.
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