Volume 122, Number 4, May 2018
|Number of page(s)||7|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||02 July 2018|
Asymmetric lateral coherence allows precise wavefront characterization
Dipartimento di Fisica, Universitá degli Studi di Milano and INFN Sezione di Milano via G. Celoria, 16, 20133 Milano, Italy
Received: 12 January 2018
Accepted: 8 June 2018
We describe a novel interferometric method for reconstructing a wavefront with high accuracy. By exploiting a proper scan of a double-slit array we experimentally show that the oscillations in the 2-dimensional map of the asymmetric lateral coherence are locally dilated or contracted as a function of the wavefront curvature, which produces a phase modulation of the real part of the complex degree of coherence. The proposed method can be used for high-resolution wavefront reconstruction from microwaves to X-rays.
PACS: 42.25.Kb – Coherence / 42.15.Dp – Wave fronts and ray tracing / 42.25.Hz – Interference
© EPLA, 2018
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