Near-field imaging with far-field data

Using the inverse diffractive grating problem as an example, we demonstrate how a super-resolution can be achieved stably by using far-field data. The idea is to place a slab of a homogeneous medium with a large index of refraction above the grating surface, and more propagating wave modes can be ut...

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Bibliographic Details
Published in:Applied mathematics letters 2016-10, Vol.60, p.36-42
Main Authors: Bao, Gang, Li, Peijun, Wang, Yuliang
Format: Article
Language:English
Subjects:
Diffraction gratings
Diffractive grating
Imaging
Inverse
Inverse scattering
Mathematical analysis
Reconstruction
Refractivity
Slabs
Super-resolution
Wave propagation
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Summary:Using the inverse diffractive grating problem as an example, we demonstrate how a super-resolution can be achieved stably by using far-field data. The idea is to place a slab of a homogeneous medium with a large index of refraction above the grating surface, and more propagating wave modes can be utilized from the far-field data which contributes to the reconstruction resolution.
ISSN:0893-9659
1873-5452
DOI:10.1016/j.aml.2016.03.023