Synthetic optical holography for in-depth imaging of optical vortices in speckle patterns

被引：4

作者：

Di Donato, A. ^{[1
]}

Tamagnone, M. ^{[2
]}

Criante, L. ^{[3
]}

Cavanini, L. ^{[4
]}

Mencarelli, D. ^{[1
]}

Ippoliti, G. ^{[1
]}

Pierantoni, L. ^{[1
]}

Orlando, G. ^{[1
]}

Morini, A. ^{[1
]}

Farina, M. ^{[1
]}

机构：

[1] Univ Politecn Marche, Dept Informat Engn, I-60131 Ancona, Italy

[2] Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Ist Italiano Tecnol, Ctr Nano Sci & Technol, I-20133 Milan, Italy

[4] Ind Syst & Control Ltd, Culzean House,36 Renfield St, Glasgow G2 1LU, Lanark, Scotland

来源：

AIP ADVANCES | 2019年 / 9卷 / 01期

基金：

欧盟地平线“2020”;

关键词：

TOPOLOGICAL CHARGE;

D O I：

10.1063/1.5053564

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we report a novel approach based on a lensless Synthetic Optical Holography (SOH) that is aimed to recover the complex scattered field from buried surfaces at different wavelengths with sub-nanometric spectral resolution, without affecting the phase retrieval in depth. The proposed technique is applied to characterize and image the field scattered from a rough embedded surface of a microfluidic channel. The real and imaginary part of the random complex field revealed the presence of 2D optical vortices at each location in which a phase singularity is located. A statistical study of optical vortices is presented and the high spectral resolution is exploited to study the behavior of topological charges with the frequency shift. (C) 2019 Author(s).

引用

页数：7

共 26 条

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