Stacked Multilevel Fresnel Zone Plates for Hard X-Rays

TL;DR

This paper introduces a novel stacked multilevel Fresnel zone plate design for hard X-ray focusing, combining layered fabrication with high efficiency and simplified etching, supported by numerical simulations.

Contribution

It presents a new layered approach to multilevel Fresnel zone plates, enhancing focusing efficiency and fabrication practicality for hard X-ray applications.

Findings

Numerical simulations validate layer alignment criteria.

The design achieves high focusing efficiency.

Layered fabrication reduces etching depth requirements.

Abstract

The new type of multilevel Fresnel zone plate, consisting of stacked layers with bi-level zone profile has been investigated. The conditions of layers acting as single multilevel Fresnel zone plate have been discussed by numerical simulation. The criteria for layers alignment have been presented. Considered approach of zone plate fabrication allows achieving high level focusing efficiency from one side and decreasing zone profile etching deep from the other.