Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wolf phase tomography (WPT) of transparent structures using partially
  coherent illumination   Diffraction tomography using coherent holographic imaging has been proposed
by Emil Wolf in 1969 to extract 3D information from transparent, inhomogeneous
objects. At the same time, the Wolf equations describe the propagation
correlations associated with partially coherent fields. Combining these two
concepts, here we present Wolf phase tomography (WPT), which is a method for
performing diffraction tomography using partially coherent fields. The WPT
reconstruction works in the direct space-time domain, without the need of
Fourier transformation, and decouples the refractive index distribution from
the thickness of the sample. We demonstrate the WPT principle using data
acquired by spatial light interference microscopy (SLIM). SLIM is a
quantitative phase imaging method that upgrades an existing phase contrast
microscope by introducing controlled phase shifts between the incident and
scattered fields. The illumination field in SLIM is spatially partially
coherent (emerging from a ring-shaped pupil function) and of low temporal
coherence (white light), thus, suitable for the Wolf equations. From three
intensity measurements corresponding to different phase-contrast frames in
SLIM, the 3D refractive index distribution is obtained right away by computing
the Laplacian and second time derivative of the measured complex correlation
function. The high-throughput and simplicity of this method enables the study
of 3D, dynamic events in living cells across entire multi-well plates, with RI
sensitivity on the order of 10-5. We validate WPT with measurements of standard
samples (microbeads), spermatozoa, and live neural networks.

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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int