.png){kind=icon}
.png){kind=icon}
Return
Ultrahigh Extinction Ratio Long-Wave Infrared Polarization-Selective Broadband Metamaterial Absorber
.png){kind=icon}
OA
AI
DOI：10.1002/adpr.202200269.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Metamaterial absorbers (MAs) provide new miniaturization, integration, and high-performance solution for infrared polarization imaging systems. However, it is challenging for past MAs to obtain broadband absorption and a high extinction ratio simultaneously. Herein, a long-wave infrared broadband polarization-selective MA with an ultrahigh extinction ratio is proposes and numerically demonstrated. The MA is composed of a metal-dielectric-metal sandwich structure. The cut-wire resonator on the top layer and the wire pair on the bottom layer provide the MA with excellent polarization selectivity. In the wavelength range of 8.28-14.15 mu m, the absorption of the Transverse Magnetic (TM) wave is greater than 90%, while the absorption of the Transverse Electric (TE) wave is less than 0.15%, and the average extinction ratio reaches 724. The high extinction ratio remains to reach 119 when the MA is integrated into a silicon substrate. This work promises to bring new solutions to infrared polarization imaging.
Keywords:
infrared polarization imaging
long-wave infrared
metamaterial absorbers
polarization-selective absorber
Journal
IF:
18.8
Papers:
961
Citations:
3.6K