Varifocal Metalens for Compact and Accurate Quantitative Phase ImagingClick to copy article linkArticle link copied!
- Qixuan MinQixuan MinWangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaHangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaMore by Qixuan Min
- Joshua TrappJoshua TrappInstitute for Applied Optics (ITO), University of Stuttgart, Stuttgart 70569, GermanyMore by Joshua Trapp
- Tong FangTong FangHangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaMore by Tong Fang
- Renjie HuRenjie HuWangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaSchool of Microeletronics, Shanghai University, Shanghai 200444, ChinaMore by Renjie Hu
- Fei WangFei WangWangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaMore by Fei Wang
- Zike ZhangZike ZhangWangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaMore by Zike Zhang
- Xin LiuXin LiuWangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaHangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaMore by Xin Liu
- Anli Dai
- Chengsen YangChengsen YangHangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaMore by Chengsen Yang
- Jinying Guo*Jinying Guo*E-mail: [email protected];.Wangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaMore by Jinying Guo
- Guohai Situ*Guohai Situ*E-mail: [email protected]Wangzhijiang Innovation Center for Laser, Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaKey Laboratory of Space Laser Communication and Detection Technology, Shanghai institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaHangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, ChinaMore by Guohai Situ
Abstract
The transport of intensity equation (TIE), a noninterferometric method for quantitative phase imaging (QPI), enables the characterization of transparent objects and is widely applied in fields such as biomedicine, materials science, and optical metrology. Traditional TIE methods require the mechanical movement of detectors to capture multiple images, which limits integration, stability, and speed of the system. In this work, an approach is introduced that replaces mechanical movement with the alteration of the properties of incident light. By combining a specially designed polarization multiplexed metasurface with the rotation of the light source’s polarization state, a varifocal metalens is realized. This approach allows the acquisition of multiple defocused images without mechanical movement. Coupled with the multiple-frame TIE algorithm, it yields a compact, stable, and accurate phase-imaging technique. Compared to a dual-channel polarization multiplexed metalens, phase reconstruction based on a varifocal metalens exhibits superior robustness and enhanced accuracy. The experimental results indicate that our method can accurately reconstruct the phase of objects with different phase gradients using partially coherent light illumination, achieving an average percentage error of less than 2.7%. This dynamic illumination approach, combined with specific metasurfaces, holds potential applications in realizing lightweight, compact, and multifunctional imaging systems.
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