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