Triple-broadband infrared metamaterial absorber with polarization-independent and wide-angle absorption

Liu, Chang; Qi, Limei; Wu, Mingjing

doi:10.1364/ome.8.002439

Cited by 22 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For microwave frequencies, metasurface absorbers comprise periodic metallic patterns printed on top of a substrate backed by a metallic sheet deliver absorptances as high as 0.99 [5]. For terahertz frequencies, metasurface absorbers comprise periodic arrays of ultrathin patches of materials such as graphene [6], titanium nitride [7], gallium arsenide [8], and gold [9] printed on top of a metal-backed substrate.…”

Section: Introductionmentioning

confidence: 99%

Graphene pixel-based polarization-insensitive metasurface for almost perfect and wideband terahertz absorption

2019

View full text Add to dashboard Cite

Absorption of terahertz waves by a metasurface comprising a biperiodic array of pixellated meta-atoms on top of a dielectric substrate backed by a perfect electric conductor was simulated using a commercial software, with either all or a few of the pixels in every meta-atom patched with graphene. Absorptances as high as 0.99 over a 1.16-THzwide spectral regime for normal incidence were found for a metasurface comprising meta-atoms with only a few pixels patched with graphene, regardless of the polarization state. In comparison to metasurface absorbers comprising two graphene layers separated by an insulator mounted on a metal-backed substrate, graphene need was thereby reduced by two thirds. The number and dimensions of the pixels in a meta-atom can be altered to fit spectral requirements. arXiv:1904.03707v3 [physics.optics]

show abstract

Section: Introductionmentioning

confidence: 99%

Graphene pixel-based polarization-insensitive metasurface for almost perfect and wideband terahertz absorption

2019

View full text Add to dashboard Cite

show abstract

“…However, little dissimilarity in absorption points has been glimpsed due to the divergence in materials properties in those two simulations. Finally, for more specific verification, the proposed PMA is measured with the interference theory model [70]- [75] And, the final absorption can be written as (14), which is plotted in Fig. 10(a).…”

Section: H Verification Of Numerical Analysis In a Simulation Software And With Interference Theory Modelmentioning

confidence: 99%

A Multi-Band Near Perfect Polarization and Angular Insensitive Metamaterial Absorber With a Simple Octagonal Resonator for Visible Wavelength

et al. 2021

View full text Add to dashboard Cite

A multi-band, ultrathin, polarization-insensitive, near-perfect metamaterial absorber (PMA) has been proposed and substantiated numerically for solar thermophotovoltaic (STPV) systems which also can be used in some other applications. This kind of absorber currently drawing massive interest throughout the research of optics. Especially in solar harvesting metamaterial absorbers can give a huge boost in efficiency by intensifying the solar electromagnetic wave. Visible wavelength has been the key focus of the proposed design so that the structure can utilize solar energy proficiently. Aluminum (Al) and Gallium Arsenide (GaAs) have been chosen as materials for their higher electron mobility along with good temperature stability. The PMA is a three-layer metal-dielectric-metal called sandwiched structure. For proper characterization of the PMA absorber, extensive parametric inspections were carried out with underlying physics. The finite integration technique (FIT) in computer simulation technology microwave studio (CST MWS) is used to perform the numerical analysis and for verification finite element method (FEM) in COMSOL Multiphysics has been used along with interference theory model (ITM) for calculating the absorbance. The PMA shows 99.27%, 99.89%, 99.91%, and 99.06% perfect absorption at 454.75nm, 505.53nm, 568.72nm, and 600.85nm resonance wavelength in all three modes of waveguide propagation. The design also exhibits incident wave stability up to 60 • for both transverse electric (TE), and transverse magnetic (TM) wave modes. Excellent glucose concentration sensing ability was also observed with the proposed structure. So, the proposed PMA can be implemented in solar energy harvesting devices along with solar sensors or detectors, light trappers, light modulators, or light wavelength detectors.

show abstract

“…The selection of the optical response under x and y polarization can be advantageous to switch between anisotropic features. In contrast, polarization‐independent absorption is essential for applications such as photodetectors and can easily be reached using a crossed grating type nanopattern in the top layer, or nanoantenna arrangements with rotational symmetry . A polarization‐independent design with cylinders on a square grating was fabricated using interferential lithography, exposing the photoresist twice.…”

Section: Polarization‐independent Absorbing Metasurfacesmentioning

confidence: 99%

“…In contrast, polarization-independent absorption is essential for applications such as photodetectors and can easily be reached using a crossed grating type nanopattern in the top layer, [7,37] or nanoantenna arrangements with rotational symmetry. [41][42][43][44][45] A polarization-independent design with cylinders on a square grating was fabricated using interferential lithography, exposing the photoresist twice. A 90° rotation around the surface normal was done between subsequent exposition steps.…”

Section: Polarization-independent Absorbing Metasurfacesmentioning

confidence: 99%

Heavily Doped Semiconductor Metamaterials for Mid‐Infrared Multispectral Perfect Absorption and Thermal Emission

Barho

Гонзалез-Посада

Cerutti

et al. 2020

Advanced Optical Materials

View full text Add to dashboard Cite

A metamaterial perfect absorber based on layered, doped and undoped semiconductors is experimentally and theoretically investigated. Design rules are given to control the multispectral, narrow, strong absorption features (>98% absorption) in the mid‐IR spectrum. The proposed sub‐wavelength grating structures support localized surface plasmons and photonic resonances associated to the quarter wavelength optical thickness of the undoped spacer layer. The resonances hybridize depending on the geometric setup of the metamaterial and the material properties of the heavily doped semiconductor. The angular response of the resonances is studied to determine the acceptance angle. While the absorption is best at near‐normal incidence, the spectral position of the absorption bands is weakly dependent on the angular incidence up to angles of 45°. Complementary to the polarization‐dependent grating design of the metamaterial, an alternative based on a crossed grating nanopattern is also investigated for polarization insensitivity. Furthermore, it is demonstrated that the metamaterial perfect absorber provides a tailored thermal emission spectrum. Based on the heavily doped InAsSb/GaSb metamaterial platform, integrable and miniaturized perfect absorbers and thermal sources can be built.

show abstract

Triple-broadband infrared metamaterial absorber with polarization-independent and wide-angle absorption

Cited by 22 publications

References 38 publications

Graphene pixel-based polarization-insensitive metasurface for almost perfect and wideband terahertz absorption

Graphene pixel-based polarization-insensitive metasurface for almost perfect and wideband terahertz absorption

A Multi-Band Near Perfect Polarization and Angular Insensitive Metamaterial Absorber With a Simple Octagonal Resonator for Visible Wavelength

Heavily Doped Semiconductor Metamaterials for Mid‐Infrared Multispectral Perfect Absorption and Thermal Emission

Contact Info

Product

Resources

About