کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1679119 | 1010006 | 2006 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spatial incoherence in phase retrieval based on focus variation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spatial incoherence in phase retrieval based on focus variation Spatial incoherence in phase retrieval based on focus variation](/preview/png/1679119.png)
چکیده انگلیسی
We investigate the effect of spatial incoherence on two methods of phase retrieval based on focus variation: the transport of intensity equation and iterative wave function reconstruction. Spatial incoherence provides an upper bound on the defocus step size which should be used in each case. The requirement that phase information manifests itself in sufficient variation in the defocused images provides a lower bound on the defocus step size which should be used in each case. The scaling of these upper and lower bounds with object size and imaging resolution differs in such a way that, given the spatial incoherence properties of the source, for sufficiently low resolutions neither technique can retrieve phase information. The regions of applicability of the two techniques are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 106, Issue 10, AugustâSeptember 2006, Pages 914-924
Journal: Ultramicroscopy - Volume 106, Issue 10, AugustâSeptember 2006, Pages 914-924
نویسندگان
A.V. Martin, F.-R. Chen, W.-K. Hsieh, J.-J. Kai, S.D. Findlay, L.J. Allen,