title: Improvement of optical resolution in far-field imaging by optical multiplication.
abstract: Based on the idea of the complex filters suggested by Toraldo di Francia in 1952, super-resolved imaging has been achieved by using interferometric image multiplication. The question of whether super-resolution implies a limited field of view is discussed, and an analytical criterion to decide this question is obtained. Three different imaging configurations are investigated, all of which gave a spatial resolution exceeding that corresponding to the full open aperture of the optical system. A resolution limit 55% of the Rayleigh limit was achieved for incoherently illuminated objects. One price that must be paid for the super-resolution is inefficient use of the light source. A second price is a limitation to the usable field of view.
authors.affiliation: Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel. philya@techunix.technion.ac.il
authors.forename: I
authors.initials: I
authors.lastname: Leizerson
authors.forename: S G
authors.initials: SG
authors.lastname: Lipson
authors.forename: V
authors.initials: V
authors.lastname: Sarafis
mesh_terms: D005583:Fourier Analysis; D007089:Image Enhancement / Q000379:methods*; D018613:Microscopy, Confocal / Q000295:instrumentation* / Q000379:methods*; D008857:Microscopy, Interference / Q000295:instrumentation* / Q000379:methods*; D055095:Optics and Photonics