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Computational lens for the near field
Authors:Carney P Scott  Frazin Richard A  Bozhevolnyi Sergey I  Volkov Valentyn S  Boltasseva Alexandra  Schotland John C
Affiliation:Department of Electrical and Computer Engineering and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.
Abstract:A method is presented to reconstruct the structure of a scattering object from data acquired with a photon scanning tunneling microscope. The data may be understood to form a Gabor type near-field hologram and are obtained at a distance from the sample where the field is defocused and normally uninterpretable. Object structure is obtained by the solution of the inverse scattering problem within the accuracy of a perturbative, two-dimensional model of the object.
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