等离子体子
纳米光子学
物理
对称性破坏
对称(几何)
超材料
联轴节(管道)
参数空间
辐射传输
质量(理念)
光学
光电子学
量子力学
材料科学
几何学
数学
冶金
作者
Andreas Aigner,Andreas Tittl,Juan Wang,Thomas Weber,Yuri S. Kivshar,Stefan A. Maier,Haoran Ren
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2022-12-09
卷期号:8 (49)
被引量:40
标识
DOI:10.1126/sciadv.add4816
摘要
Plasmon resonances play a pivotal role in enhancing light-matter interactions in nanophotonics, but their low-quality factors have hindered applications demanding high spectral selectivity. Here, we demonstrate the design and 3D laser nanoprinting of plasmonic nanofin metasurfaces, which support symmetry-protected bound states in the continuum up to the fourth order. By breaking the nanofins’ out-of-plane symmetry in parameter space, we achieve high-quality factor (up to 180) modes under normal incidence. The out-of-plane symmetry breaking can be fine-tuned by the nanofins’ triangle angle, opening a pathway to precisely control the ratio of radiative to intrinsic losses. This enables access to the under-, critical, and over-coupled regimes, which we exploit for pixelated molecular sensing. We observe a strong dependence of the sensing performance on the coupling regime, demonstrating the importance of judicious tailoring of light-matter interactions. Our demonstration provides a metasurface platform for enhanced light-matter interaction with a wide range of applications.
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