Abstract

In this paper, quintuple-band absorption switch has been demonstrated and studied. Finite-difference time-domain simulations indicate the absorption originated from localized surface plasmon polaritons and Fabry–Perot resonance effect. Quintuple-band plasmonic perfect absorption with maximum absorption of 99.8%, 86.2%, 99.9%, 95.8%, and 97.8% at the resonance wavelength of 635 nm, 694 nm, 915 nm, 1125 nm, and 1345 nm, respectively. We calculate the sensitivity of the five modes is about ${{\rm s}_{1}} = {74}\,\,{\rm nm/RIU}$, ${{\rm s}_{2}} = {376}\;{\rm nm/RIU}$, ${{\rm s}_{3}} = {518}\;{\rm nm/RIU}$, ${{\rm s}_{4}} = {512}\;{\rm nm/RIU}$, and ${{\rm s}_{5}} = {7}98\;{\rm nm/RIU}$(RIU is the refractive index unit). Angle and polarization independent of the quintuple-band absorption are also investigated. Moreover, by adjusting the pump light on and off, absorption ratios of 3.9, 10.3, 3.8, 3.4, and 6.8 have been achieved. Besides, the proposed multiwavelength absorption switching has excellent absorption stability and polarization tolerance. We believe the proposed structure can find potential applications in the fields of multiband sensor and all-optical modulation.

© 2022 Optica Publishing Group

Narrowband metamaterial absorbers based on interlaced T-shaped all-dielectric resonators for sensing application

Yi Fan, Rongcao Yang, Zhaohua Li, Yijia Zhao, Jinping Tian, and Wenmei Zhang
J. Opt. Soc. Am. B 39(10) 2863-2869 (2022)

Nanosensor and slow light based on quintuple Fano resonances in a metal–insulator–metal waveguide coupled with a concentric-ring resonator

F. Chen and W. X. Yang
J. Opt. Soc. Am. B 40(4) 736-742 (2023)

Tunable dual-band metamaterial absorber in the infrared range based on split-ring-groove array

Jinlai Liu, Bingyi Liu, Shuai Tang, Jie Song, and Yongyuan Jiang
Appl. Opt. 61(2) 471-477 (2022)

Enhanced absorption per unit mass for infrared arrays using subwavelength metal–dielectric structures

Avijit Das and Joseph J. Talghader
J. Opt. Soc. Am. B 38(1) 183-193 (2021)

Metamaterial solar absorber based on titanium resonators for operation in the ultraviolet to near-infrared region

Mojtaba Ehsanikachosang, Kianoosh Karimi, Mir Hamid Rezaei, and Hamidreza Pourmajd
J. Opt. Soc. Am. B 39(12) 3178-3186 (2022)