Ultrabroadband light absorption based on photonic topological transitions in hyperbolic metamaterials

Abstract

Photonic topological transitions (PTTs) in metamaterials open up a novel approach to design a variety of high-performance optical devices and provide a flexible platform for manipulating light-matter interactions at nanoscale. Here, we present a wideband spectral-selective solar absorber based on multilayered hyperbolic metamaterial (HMM). Absorptivity of higher than 90% at normal incidence is supported over a wide wavelength range from 300 to 2215 nm, due to the topological change in the isofrequency surface (IFS). The operating bandwidth can be flexibly tailored by adjusting the thicknesses of the metal and dielectric layers. Moreover, the near-ideal absorption performance can be retained well at a wide angular range regardless of the incident light polarization. These features make the proposed design hold great promise for practical applications in energy harvesting.

Anisotropic Photonics Topological Transition in Hyperbolic Metamaterials Based on Black Phosphorus

“…When the IFC of structure transitions between open hyperboloid and closed ellipsoid, PTT point will exist. The regime, which is very close to PTT point, is also known as the epsilon-near-zero (ENZ) regime [ 21 ]. At PTT point, HMMs can significantly suppress the diffraction and scattering of incident light, which can provide a new way for efficiently manipulating light-matter interactions at nanoscales.…”

“…In contrast to the closed iso-frequency contour (IFC) of traditional materials, the hyperbolic IFC is open and large wave-vectors can be supported in HMMs [ 15 ]. This special feature has been explored for many prospective applications in hyperlens [ 6 ], spontaneous emission enhancement [ 16 , 17 ], Goos–Hänchen effect [ 18 , 19 ], photonic topological transition [ 20 , 21 , 22 , 23 , 24 ], photonic spin hall effect [ 25 , 26 ], and Casimir force [ 27 , 28 ].…”

Ultra-broadband metamaterial absorbers from long to very long infrared regime

“…Since Landy et al demonstrated the first metamaterial absorber with one perfect absorption peak in the microwave band through an experiment 19 , the control and engineering of the spectral absorption properties of MPAs has attracted significant interest. In their experiment, broadband perfect absorption was achieved with MPAs in microwave regime [20][21][22][23][24] and was extended from visible [25][26][27][28][29][30][31][32][33][34][35][36][37] , infrared [38][39][40][41][42][43][44][45][46][47][48][49][50][51] and THz [52][53][54][55][56][57] bands. This study will compare these representative theoretical and experimental works on the topic of broadband MPAs from visible to infrared bands in supplement document.…”

Porous Gold Nanolayer Coated Halide Metal Perovskite-Based Broadband Metamaterial Absorber in the Visible and Near-IR Regime

“…These possess opposite signs for the parallel and perpendicular components of effective permittivity. Varieties of HMMs have been reported in the literature operating in the terahertz (THz) and optical regimes [4], [5] for potential applications in super resolution imaging [1], [6], filtering [7], [8], extreme polarization anisotropy of photoluminescence [9], energy harvesting [10], biosensors [11], [12], and absorbers [10], [13]- [15].…”