Robust method of metrology for direct phase measurement for nano-antennas

Autor: Le Gall Cécile, Bellanger Cindy, Primot Jérôme, Jaeck Julien
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: EPJ Web of Conferences, Vol 287, p 04008 (2023)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/202328704008
Popis: Optical metasurfaces allow the development of original and more and more complex optical functions. They are therefore facing a design and characterization problem. Indeed, they are more and more composed of complex patterns, with different types of antennas and non-periodic. This is why it is important to build libraries of nano-structures that can be used as building blocks to compose optical functions. Therefore, we propose a direct phase measurement metrology method for optical nanostructures. Using lateral shift interferometry, our technique allows to simultaneously characterize in amplitude and phase nano-antennas of all types, shapes and materials, and thus to experimentally establish a library of nano-antennas. Our method brings an additional tool in the design of nano-antennas, which completes the existing simulation tools, by allowing to test all types of nano-antennas.
Databáze: Directory of Open Access Journals