Work

Flexible Design of Polarization-Insensitive Metasurface Lens Based on the Equal-Phase Method

Year: 2025

Type: article

Abstract: We introduce an equal-phase method to design the polarization-insensitive metasurface lens, composed of subwavelength nano-holes etched into a silver film. By calculating the intensity distribution under linearly, circularly, and elliptically polarized light illumination, we demonstrate that the designed metasurface lens can effectively focus incident light with different polarization states. Moreover, we confirm that this polarization-insensitive property of the designed lens maintains stable focus ability across the entire visible light bandwidth, exhibiting a broadband performance. It is important to note that the metasurface lens design based on the equal-phase method is not limited by specific nanostructure units and exhibits considerable flexibility. For some complex application conditions, we also explore the design of polarization-insensitive lenses capable of generating longitudinal and transverse dual focal spots. The metasurface lenses and the design method proposed in this paper may provide a reference for the development and application of polarization-independent components in integrated photonic devices.

Source: Photonics

DOI: 10.3390/photonics12121237

Authors: Xi Xu, Zibo Lu, Shun Zhou, Yuejun Huang, Changda Zhou, Qi Zhang

Institutions: Jining Medical University, Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technology

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Natural Science Foundation of Shandong Province