Refractive index sensing using all-dielectric metasurface with analogue of electromagnetically induced transparency

2017 ◽  
Author(s):  
Jie Hu ◽  
Tingting Lang ◽  
Menggru Wu ◽  
Ruian Zhao ◽  
Jun Chen
Keyword(s):  
Refractive Index ◽  
Electromagnetically Induced Transparency ◽  
Refractive Index Sensing ◽  
Induced Transparency ◽  
Dielectric Metasurface

scholarly journals Sensing Enhancement of Electromagnetically Induced Transparency Effect in Terahertz Metamaterial by Substrate Etching

2021 ◽  
Vol 9 ◽  
Author(s):  
Tingling Lin ◽  
Yi Huang ◽  
Shuncong Zhong ◽  
Manting Luo ◽  
Yujie Zhong ◽  
...  
Keyword(s):  
Electric Field ◽  
Electromagnetically Induced Transparency ◽  
High Sensitivity ◽  
Strong Light ◽  
Refractive Index Sensing ◽  
Quadrupole Resonance ◽  
Matter Interaction ◽  
Potential Applications ◽  
Light Matter Interaction ◽  
Induced Transparency

A broad range of terahertz (THz) metamaterials have been developed for refractive index sensing. However, most of these metamaterials barely make sufficient use of the excited electric field which is crucial to achieve high sensitivity. Here, we proposed a metamaterial sensor possessing electromagnetically induced transparency (EIT) resonance that is formed by the interference of dipole and quadrupole resonance. In particular, the strengthening of light-matter interaction is realized through substrate etching, leading to a remarkable improvement in sensitivity. Hence, three kinds of etching mode were presented to maximize the utilization of the electric field, and the corresponding highest sensitivity is enhanced by up to ~2.2-fold, from 0.260 to 0.826 THz/RIU. The proposed idea to etch substrate with a strong light-matter interaction can be extended to other metamaterial sensors and possesses potential applications in integrating metamaterial and microfluid for biosensing.

Refractive Index Sensing Utilizing Tunable Polarization Conversion Efficiency With Dielectric Metasurface

2021 ◽  
Vol 39 (2) ◽  
pp. 682-687
Author(s):  
Yong Liang ◽  
Qilong Tan ◽  
Wen Zhou ◽  
Xia Zhou ◽  
Ziang Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Conversion Efficiency ◽  
Polarization Conversion ◽  
Refractive Index Sensing ◽  
Dielectric Metasurface
Sign in / Sign up

Export Citation Format

Share Document