Analysis of focusing properties of amplitude zone plates

Elena S. Kozlova; Victor V. Kotlyar; Sergey A. Fomchenkov

doi:10.1117/12.2520797

26 April 2019 Analysis of focusing properties of amplitude zone plates

Elena S. Kozlova, Victor V. Kotlyar, Sergey A. Fomchenkov

Author Affiliations +

Proceedings Volume 11032, EUV and X-ray Optics: Synergy between Laboratory and Space VI; 1103211 (2019) https://doi.org/10.1117/12.2520797
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

In this paper amplitude Fresnel zone plates with metal relief on silica glass is investigated. Simulation by frequencydependent finite-difference time domain method shows that all proposed designs of amplitude lenses can produce focal spots whose transversal size could overcome the diffraction limit (full width at half maximum of intensity is 0.38 – 0.46 of wavelength) and in several cases amplitude zone plates give tighter focal spot (full width at half maximum of intensity is 0.38 of wavelength) than phase zone plate.

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Elena S. Kozlova, Victor V. Kotlyar, and Sergey A. Fomchenkov "Analysis of focusing properties of amplitude zone plates", Proc. SPIE 11032, EUV and X-ray Optics: Synergy between Laboratory and Space VI, 1103211 (26 April 2019); https://doi.org/10.1117/12.2520797

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