title: Achieving sub-Rayleigh resolution via thresholding.
abstract: Diffraction from a finite-diameter entrance pupil imposes the Rayleigh bound on the spatial resolution achievable by a conventional imaging system. We demonstrate resolution beyond this limit through unstructured scanning of a focused laser beam across an object together with dynamic application of a threshold N less than the maximum count level Nmax. Experimental results show sub-Rayleigh resolution enhancement by a factor of [ln(Nmax/N)]1/2.
authors: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. smouradi@mit.edu
authors: Sara
authors: S
authors: Mouradian
authors: Franco N C
authors: FN
authors: Wong
authors: Jeffery H
authors: JH
authors: Shapiro