Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared

Photonics, Journal Year: 2025, Volume and Issue: 12(1), P. 83 - 83

Published: Jan. 17, 2025

In the development of optical absorption technology, achieving ultra-wideband high structures that span from 200 nm ultraviolet C region to 5800 mid-infrared range has been a significant challenge in materials science. Previous studies have shown few absorbers can simultaneously achieve an rate above 0.900 and cover such vast spectral range. This study presents innovative seven-layer composite structure successfully addresses this long-standing technical issue. Through carefully designed layered architecture, researchers employed COMSOL Multiphysics (version 6.0) for detailed numerical simulations verify performance structure. The structural design features two key innovations. composition, bottom (h1), h3, h5 layers are made metallic Fe, while them (h2, h4, h6) use SiO2. top layer is composed discontinuous cylinder Ti matrix. first innovation involves inwardly recessed square on Fe planes h4 h6 layers, across 600–5800 second matrix layer, which enhances 200–600 wavelength not only employs relatively low-cost metals oxide but also demonstrates potential. precise design, provides new ideas technological pathways absorbers.

Language: Английский

Chain-type multi-mode polarization-sensitive metamaterial absorber in infrared band

Results in Physics, Journal Year: 2024, Volume and Issue: unknown, P. 108105 - 108105

Published: Dec. 1, 2024

Language: Английский