Sub-Rayleigh resolution by phase imaging.
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 1.64x.
Cotte
Yann
Y
Ecole Polytechnique Fédérale de Lausanne, Advanced Photonics Laboratory, 1015 Lausanne, Switzerland. yann.cotte@a3.epfl.ch
Toy
M Fatih
MF
Shaffer
Etienne
E
Pavillon
Nicolas
N
Depeursinge
Christian
C