Achieving sub-Rayleigh resolution via thresholding
Authors:
- 8 March 2011
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 19 (6) , 5480-5488
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.Keywords
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