| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 03038 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Applications of Optics and Photonics | |
| DOI | https://doi.org/10.1051/epjconf/202533503038 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533503038
Point Diffraction Interferometer: A simple diagnostic tool for metalenses characterization
Research on the Energy System - RSE SpA, Transmission and Distribution Technologies Department, Via Callegari 21, 29122, Piacenza, Italy
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
This work describes the development and testing of a diagnostic technique, based on a robust setup named Point Diffraction Interferometer, to characterize the wavefronts generated by metalenses. The presented optical setup is simple, cheap and insensitive to mechanical disturbances, nevertheless precisely capable to reconstruct the radiation wavefront produced by a metalens. The obtained interference patterns exhibit suitable contrast ratio of the fringes and high spatial resolution, thus allowing the detection of even highly distorted wavefronts, and providing a measurable information about the metalens properties.
© The Authors, published by EDP Sciences, 2025
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