Perfect Narrowband Absorber Based on Patterned Graphene-Silica Multilayer Hyperbolic Metamaterials
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Perfect Narrowband Absorber Based on Patterned Graphene-Silica Multilayer Hyperbolic Metamaterials Yan Feng 1 & Zheng-Da Hu 1 & Aliaksei Balmakou 2 & Sergei Khakhomov 2 & Igor Semchenko 2 & Jicheng Wang 1,3 Dongdong Liu 4 & Tian Sang 1
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# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Graphene-based hyperbolic metamaterials are well known for their optical anisotropy, high absorption of electromagnetic radiation, and low energy loss. We proposed a novel multilayer graphene-silica hyperbolic metamaterial designed as a grating structure providing narrowband near-perfect absorption of radiation in a mid-infrared band. The absorber is designed for insensitivity of the absorptance peak positioning on the angle of the incident radiation and distinct polarization selectivity of absorption for the TM mode only. A new way of handling the absorption is achieved by varying the thickness of its combined graphene-silica layers. Possibly, the type of absorber will be applicable in the fields of optical sensing, photoelectric detection, and other potential fields. Keywords Hyperbolic metamaterials . Graphene-based grating . Narrowband absorber . Perfect absorption
Introduction Being designed as various artificial structures, metamaterials give rise to non-typical for classical electrodynamics phenomena that deal with electromagnetic wavefront handling uncharacteristic for nature. In the field of absorbers, the advances of metamaterials have gradually spread to a wide class of technological innovations in thermal emitters [1, 2], solar cells [3–5], energy harvesting [6], photodetectors [7], plasma sensors [8], stealth covers [9, 10], etc. Since the designing of the first metamaterial absorber [11], a lot of intricate structures of all shapes and sizes have been proposed for various purposes
* Jicheng Wang [email protected] * Tian Sang [email protected] 1
School of Science, Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Jiangnan University, Wuxi 214122, China
2
Department of Optics and General Physics, Francisk Skorina Gomel State University, Sovetskaya Str. 104, 246019 Gomel, Belarus
3
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
4
School of Mathematics & Physics Science, Xuzhou University of Technology, Xuzhou 221018, China
and spectral bands ranging from microwaves to the visible spectrum. Any absorber can be divided into two types regarding its spectral width: narrowband and wideband. Both of them have their specific areas of application. Narrowband absorbers are attributed to metal-dielectric-metal (MDM) [12] or all-metal periodic structures [13, 14] that are capable of converting part of the incident light into heat via plasmon resonance. Therefore, the full width at half maximum (FWHM) is narrow in this case due to dissipation of wave energy in metals in the close vicinity of the resonance. As highly dedicated for specific optical applications, narrowband absorbers are intens
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