Publication

Sub-Rayleigh resolution by phase imaging

Christian Depeursinge, Nicolas Pavillon, Etienne Shaffer, Muhammed Fatih Toy, Yann Jérôme Michel Pascal Cotte
2010
Journal Articles

Abstract

We report the experimental observation of systematically occurring phase singularities in coherent imaging of sub-Rayleigh distanced objects. A theory that relates the observation to the sub-Rayleigh distance is presented and compared with experimental measurements. As a consequence, the limit of resolution with coherent illumination is extended by a factor of 1.64×.

Official source

https://infoscience.epfl.ch/entities/publication/5ce340ff-ab44-4714-8b1b-803b1b8f919d

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Christian Depeursinge, Nicolas Pavillon, Etienne Shaffer, Muhammed Fatih Toy, Yann Jérôme Michel Pascal Cotte
2010
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5ce340ff-ab44-4714-8b1b-803b1b8f919d

About this result

Related concepts (12)

Phase-contrast imaging

Phase-contrast imaging is a method of that has a range of different applications. It measures differences in the refractive index of different materials to differentiate between structures under analysis. In conventional light microscopy, phase contrast can be employed to distinguish between structures of similar transparency, and to examine crystals on the basis of their double refraction. This has uses in biological, medical and geological science.

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Phase-contrast X-ray imaging or phase-sensitive X-ray imaging is a general term for different technical methods that use information concerning changes in the phase of an X-ray beam that passes through an object in order to create its images. Standard X-ray imaging techniques like radiography or computed tomography (CT) rely on a decrease of the X-ray beam's intensity (attenuation) when traversing the sample, which can be measured directly with the assistance of an X-ray detector.

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