Chessboard-based achromatic binary Zone Plate

Fernández-Nuñez, Sara ; Gómez-Pedrero, José Antonio ; Torcal-Milla, Francisco José (Universidad de Zaragoza) ; Sanchez-Brea, Luis Miguel

Resumen: We numerically and experimentally demonstrate the performance of a new kind of diffractive binary zone plate for chromatic aberration compensation: the chessboard-based zone plate. The proposed achromatic zone plate consists of two spatially multiplexed zone plates following the geometry given by a chessboard and improved with morphological filters and combination under the Nyquist frequency, to mitigate aliasing effects. The obtained results are compared with those given by a random pixel-based multiplexed zone plate, reported in the literature, showing similar optical behaviour. However, the chessboard-based zone plate presents a smoother appearance without the high-frequency irregularities of the random-based designs that could be more resistant to manufacturing errors. The proposed achromatic zone plate could result of interest in fields such as solar concentration, lithography, imaging systems, visual optics, and so on.

Idioma: Inglés

DOI: 10.1016/j.optlaseng.2025.109303

Año: 2025

Publicado en: Optics and Lasers in Engineering 195 (2025), 109303 [13 pp.]
ISSN: 0143-8166

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2022-138071OB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-122486OA-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)