Information multiplexing in ptychography

被引：173

作者：

Batey, Darren J. ^{[1
]}

Claus, Daniel ^{[1
]}

Rodenburg, John M. ^{[1
,2
]}

机构：

[1] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

[2] Harwell Rutherford Appleton Lab, Didcot OX11 0FA, Oxon, England

来源：

ULTRAMICROSCOPY | 2014年 / 138卷

基金：

英国工程与自然科学研究理事会;

关键词：

Information multiplexing; Coherent diffractive imaging; Ptychography; Optical metrology; Biomedical imaging; PHASE RETRIEVAL; MICROSCOPY; POSITION;

D O I：

10.1016/j.ultramic.2013.12.003

中图分类号：

TH742 [显微镜];

学科分类号：

080401 [精密仪器及机械];

摘要：

We show for the first time that ptycho;,Yraphy (a form of lensless diffractive imaging) can recover the spectral response of an object through simultaneous reconstruction of multiple images that represent the object's response to a particular mode present in the illumination. We solve the phase problem for each mode independently, even though the intensity an at every detector pixel is an incoherent superposition of several uncorrelated diffracted waves. Until recently, the addition of incoherent modes has been seen as a nuisance in diffractive imaging: here we show that not only can the difficulties they pose be removed, but that they can also be used to discover much more information about the object. If the illumination function is also mode-specific, we show that we can also solve simultaneously for a multiplicity of such illumination modes. The work opens exciting possibilities for information multiplexing in ptychography over all visible, X-ray and electron wavelengths. (C) 2014 Elsevier B.V. All rights reserved

引用

页码：13 / 21

页数：9

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