Akademik Veri Yönetim Sistemi
4thInternational Congress on Multidisciplinary Natural Sciences and Engineering, Ankara, Türkiye, 7 - 08 Aralık 2024, ss.46
Metasurfaces have emerged as a rapidly advancing research field with significant potential to revolutionize photonic and electronic device technologies. Their ability to independently, precisely, and programmable control all properties of electromagnetic waves—such as amplitude, phase, frequency, polarization, and momentum—positions them at the forefront of future optical systems. However, achieving these functionalities in a single, highly integrated metasurface remains a significant engineering challenge. Metalenses are advanced optical components that leverage the unique capabilities of metasurfaces to control and focus light with high precision through engineered nanoscale patterns. In this study, a metalens operating at a wavelength of 1550 nm is designed using Titanium Nitride (TiN) as the base material. Although TiN is not classified as a traditional alternative plasmonic material, it behaves similarly to such materials due to its low-loss properties and high thermal stability, offering distinct advantages for advanced photonic applications. The metalens is constructed using 20 meta-cells capable of providing a continuous phase shift ranging from 0 to 2π. This design enables effective focusing at a focal length of 5 mm, achieving a focusing efficiency within acceptable levels. The metalens’s performance is rigorously analyzed using the Finite-Difference Time-Domain (FDTD) method, providing detailed numerical insights. The findings highlight the metalenses's high precision in wavefront manipulation and underscore TiN’s suitability for optical applications.