Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings

Cen, Mengjia1,2; Wang, Jiawei2; Liu, Jianxun2; Li, Ye2; Cai, Wenfeng2; Kong, Delai2; Luo, Dan2; Cao, Tun1,3; Liu, Yan Jun2

2022-12-01

10.3390/photonics9120890

PHOTONICS   Impact Factor & Quartile

2304-6732

Surface lattice resonances (SLRs) with high-quality factors supported by metal nanoparticle arrays are useful for plasmonic nanolasers, biochemical sensors, and surface-enhanced Raman spectroscopy. Most nanoparticle arrays are fabricated on a substrate, and the refractive index mismatch between the substrate and superstrate suppresses the performance of SLRs. In this work, we propose unique SLRs excited in suspended, self-aligned symmetric double-layer gratings with index-matched environment. The self-aligned double-layer gratings are fabricated using a single-step electron beam lithography and exhibit a Fano-like spectra resulting from interference between out-of-plane plasmonic resonances and diffraction modes. By changing the incident angle and refractive index of the surrounding medium, the SLRs can be tuned from visible to near-infrared regions with a high-quality factor of 120.

surface lattice resonance metasurface double-layer gratings

SCI

English

Corresponding

Optics

Optics

WOS:000902676700001

MDPI

Web of Science

1.Dalian Univ Technol, Dept Biomed Engn, Dalian 116024, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Dalian Univ Technol, Sch Optoelect Engn & Instrumentat Sci, Dalian 116024, Peoples R China

Cen, Mengjia,Wang, Jiawei,Liu, Jianxun,et al. Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings[J]. PHOTONICS,2022,9(12).

Cen, Mengjia.,Wang, Jiawei.,Liu, Jianxun.,Li, Ye.,Cai, Wenfeng.,...&Liu, Yan Jun.(2022).Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings.PHOTONICS,9(12).

Cen, Mengjia,et al."Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings".PHOTONICS 9.12(2022).