High-speed wavefront determination method based on single in-and-out electric field analysis to focus light through highly scattering medium

We develop a new type of high-speed wavefront determination method with single feedback measurement to focus light through a 15.2 scattering mean free path in ∼113 ms. Our method is based on a heterodyne-detection phase sensitivity interferometer. First, the matrix which describes the light propagat...

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Bibliographic Details
Published inAPL photonics Vol. 6; no. 3; pp. 036107 - 036107-6
Main Authors Cao, Jing, Yang, Qiang, Miao, Yusi, Li, Yan, Wang, Pinghe, Chen, Zhongping
Format Journal Article
LanguageEnglish
Published AIP Publishing LLC 01.03.2021
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Summary:We develop a new type of high-speed wavefront determination method with single feedback measurement to focus light through a 15.2 scattering mean free path in ∼113 ms. Our method is based on a heterodyne-detection phase sensitivity interferometer. First, the matrix which describes the light propagation process in the sample is measured by single input and output optical fields’ analysis. Then, by using a spatial light modulator to reshape the incident light with a matched wavefront, a focused beam is observed behind the sample. The proposed high-speed light focusing method will open new spot scanning mode toward deeper imaging through highly scattering biological tissues.
ISSN:2378-0967
2378-0967
DOI:10.1063/5.0043889