a Applied Optics Complutense Group, Optics Department, University Complutense of Madrid, Spain b School of Optics, Ave. Arcos de Jalón, 118, 28037 Madrid, Spain c Facultad de Ciencias Físicas, Ciudad Universitaria s.n., 28040 Madrid, Spain
Abstract:
We analyze the optical behavior of square Fresnel zones plates. A theoretical analysis and numerical simulations based on the Rayleigh-Sommerfeld approach have been developed analyzing properties such as the depth of focus and the intensity of the focus in terms of the number of zones. In addition, an experimental verification has been performed using a Spatial Light Modulator to implement the designed square Fresnel zones plates.