Controllable multi-point light focusing of feedback wavefront shaping based on phase superposition Hadamard encoding algorithm

To achieve controllable multi-point light focusing, we develop a new feedback wavefront shaping optimization algorithm called phase superposition Hadamard encoding algorithm (PS-HEA). This algorithm combines the phase superposition method with the Hadamard encoding algorithm, and uniformity coeffici...

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Bibliographic Details
Published in:Optik (Stuttgart) Vol. 253; p. 168549
Main Authors: Hu, Yue, Yang, Fan, He, Jiaqi, Ding, Yingchun
Format: Journal Article
Language:English
Published: Elsevier GmbH 01.03.2022
Subjects:
Customizable intensity
Multi-point controllable
Phase superposition Hadamard encoding algorithm
Wavefront shaping
Multi-point controllable
Phase superposition Hadamard encoding algorithm
Wavefront shaping
Customizable intensity
ISSN:0030-4026, 1618-1336
Online Access:Get full text
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Summary:To achieve controllable multi-point light focusing, we develop a new feedback wavefront shaping optimization algorithm called phase superposition Hadamard encoding algorithm (PS-HEA). This algorithm combines the phase superposition method with the Hadamard encoding algorithm, and uniformity coefficient H is introduced to improve the uniformity of multi-point focusing. With the PS-HEA algorithm, we experimentally realized uniform focusing and multi-point customized intensity ratio focusing of light through the scattering medium and demonstrated the strong anti-noise and light control capabilities of PS-HEA in multi-point light focusing. Our research may pave the way for potential applications of optical manipulation and optogenetics.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2021.168549