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research article

Sub-Rayleigh resolution by phase imaging

Cotte, Yann  
•
Toy, Muhammed Fatih  
•
Shaffer, Etienne  
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2010
Optics Letters

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×.

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