Three-dimensional spatial multi-point uniform light focusing through scattering media based on feedback wavefront shaping

doi:10.1088/1674-1056/abe3e6

中国物理B ›› 2021, Vol. 30 ›› Issue (4): 44207-.doi: 10.1088/1674-1056/abe3e6

收稿日期:2021-01-09 修回日期:2021-02-04 接受日期:2021-02-07 出版日期:2021-03-16 发布日期:2021-03-16

Three-dimensional spatial multi-point uniform light focusing through scattering media based on feedback wavefront shaping

Fan Yang(杨帆), Yang Zhao(赵杨), Chengchao Xiang(向成超), Qi Feng(冯祺), and Yingchun Ding(丁迎春)^†

1 College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China

Received:2021-01-09 Revised:2021-02-04 Accepted:2021-02-07 Online:2021-03-16 Published:2021-03-16
Contact: ^†Corresponding author. E-mail: dingyc@mail.buct.edu.cn
Supported by:
Project supported by the Natural Science Foundation of Beijing Municipality, China (Grant No. 7182091).

摘要/Abstract

Abstract: We use feedback wavefront shaping technology to realize the multi-point uniform light focusing in three-dimensional (3D) space through scattering media only by loading the optimal mask once. General 3D spatial focusing needs to load the optimal mask multiple times to realize the spatial movement of the focal point and the uniformity of multi-point focusing cannot be guaranteed. First, we investigate the effects of speckle axial correlation and different axial distances on 3D spatial multi-point uniform focusing and propose possible solutions. Then we use our developed non-dominated sorting genetic algorithm suitable for 3D spatial focusing (S-NSGA) to verify the experiment of multi-point focusing in 3D space. This research is expected to have potential applications in the fields of optical manipulation and optogenetics.

Key words: wavefront shaping, speckle correlation, 3D spatial focusing, multi-point focusing

中图分类号: (Wave propagation in random media)

42.25.Dd

42.25.Fx (Diffraction and scattering) 42.30.-d (Imaging and optical processing) 42.30.Ms (Speckle and moiré patterns)

. [J]. 中国物理B, 2021, 30(4): 44207-.

Fan Yang(杨帆), Yang Zhao(赵杨), Chengchao Xiang(向成超), Qi Feng(冯祺), and Yingchun Ding(丁迎春). Three-dimensional spatial multi-point uniform light focusing through scattering media based on feedback wavefront shaping[J]. Chin. Phys. B, 2021, 30(4): 44207-.

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Three-dimensional spatial multi-point uniform light focusing through scattering media based on feedback wavefront shaping

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