Work

Thermal effects on metalenses

Year: 2025

Type: article

Abstract: Metalenses, which are crucial for advancing miniaturization and enhancing performance in optical devices, have attracted considerable attention recently. However, the impact of temperature variations on metalenses (thermal effects) remains under-explored. In this study, we developed a theoretical framework to analyze these thermal effects using a linear thermal expansion model. To validate our framework, we performed finite element method simulations. In conventional lenses, thermal effects are considerably influenced by changes in refractive indices and/or surface curvatures. In contrast, our findings indicate that, for metalenses, thermal effects are mainly driven by the expansion of the substrate, with changes in index or deformation of the meta-atom being negligible. We believe that these insights will help guide the development of athermal hybrid lens systems, enabling robust performance across diverse temperature environments by effectively combining metalenses and conventional lenses.

Source: Journal of Applied Physics

DOI: 10.1063/5.0253958

Authors: Dongyoung Lee, Jisoo Kyoung

Institution: Dankook University

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: National Research Foundation of Korea, Korea Evaluation Institute of Industrial Technology