Singularimetry of local phase gradients using vortex lattices and in-line holography

Optics Express
Timothy C PetersenMichael J Morgan

Abstract

We have developed a differential form of singularimetry, which utilizes phase vortices or intensity gradient singularities as topological fiducial markers in a structured illumination context. This approach analytically measures phase gradients imparted by refracting specimens, yielding quantitative information that is both local and deterministic. We have quantified our phase gradient experiments to demonstrate that lattices of wave field singularities can be used to detect subtle phase gradients imparted by a spherical specimen and fiber optic cylinders.

References

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Feb 5, 2013·Physical Review Letters·T C PetersenM J Morgan
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Citations

Jul 15, 2016·Optics Express·Freda WerdigerDavid M Paganin
Nov 10, 2016·Optics Express·Dusan SarenacDmitry A Pushin

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