Broadband near-infrared metamaterial absorbers utilizing highly lossy metals

Ding, Fei; Dai, Jin; Chen, Yi-Ting; Zhu, Jin; Jin, Yi; Bozhevolnyi, Sergey I.

doi:10.1038/srep39445

Cited by 274 publications

(152 citation statements)

References 34 publications

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…Particularly, when the thickness of each dielectric and metallic slab is extremely subwavelength, the metal/dielectric multilayer system can be regarded as hyperbolic metamaterials which supports slow-wave modes [231,233,234]. As a final comment, it should be mentioned that highly-lossy plasmonic materials can replace the commonly used gold/silver to realize broadband absorption with simple MIM configurations [235,236].…”

Section: Broadband Absorbers Using Multi-resonancesmentioning

confidence: 99%

Gradient metasurfaces: a review of fundamentals and applications

2017

Self Cite

View full text Add to dashboard Cite

In the wake of intense research on metamaterials the two-dimensional analogue, known as metasurfaces, has attracted progressively increasing attention in recent years due to the ease of fabrication and smaller insertion losses, while enabling an unprecedented control over spatial distributions of transmitted and reflected optical fields. Metasurfaces represent optically thin planar arrays of resonant subwavelength elements that can be arranged in a strictly or quasi periodic fashion, or even in an aperiodic manner, depending on targeted optical wavefronts to be molded with their help. This paper reviews a broad subclass of metasurfaces, viz. gradient metasurfaces, which are devised to exhibit spatially varying optical responses resulting in spatially varying amplitudes, phases and polarizations of scattered fields. Starting with introducing the concept of gradient metasurfaces, we present classification of different metasurfaces from the viewpoint of their responses, differentiating electricaldipole, geometric, reflective and Huygens' metasurfaces. The fundamental building blocks essential for the realization of metasurfaces are then discussed in order to elucidate the underlying physics of various physical realizations of both plasmonic and purely dielectric metasurfaces. We then overview the main applications of gradient metasurfaces, including waveplates, flat lenses, spiral phase plates, broadband absorbers, color printing, holograms, polarimeters and surface wave couplers. The review is terminated with a short section on recently developed nonlinear metasurfaces, followed by the outlook presenting our view on possible future developments and perspectives for future applications.

show abstract

Section: Broadband Absorbers Using Multi-resonancesmentioning

confidence: 99%

Gradient metasurfaces: a review of fundamentals and applications

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…There are two absorption peaks at 477 and 783 nm, which almost perfectly match with the first and second absorption peaks of the main structure at 478 and 778 nm, respectively. This indicates that, in contrast with some of the earlier suggested absorbers [16,17], these peaks are mainly not due to the excitation of a PSP mode at the bottom Al 2 O 3 -Ti interface. Indeed, when there is a PEC at the bottom layer, any PSP mode cannot exist.…”

Section: Physical Analysismentioning

confidence: 54%

“…The concept of metamaterials has made it possible to overcome this contradiction and to come up with EM absorbers with a subwavelength thickness. Such metamaterial-based EM absorbers are reported in various frequency regimes that include microwave [11], terahertz [12,13], far-Infrared (FIR) [14], mid-Infrared (MIR) [15], near-infrared (NIR) [16], and visible [17,18].…”

Section: Introductionmentioning

confidence: 99%

A Route to Unusually Broadband Plasmonic Absorption Spanning from Visible to Mid-infrared

et al. 2019

View full text Add to dashboard Cite

In this paper, a route to ultra-broadband absorption is suggested and demonstrated by a feasible design. The high absorption regime (absorption above 90%) for the suggested structure ranges from visible to mid-infrared (MIR), i.e. for the wavelength from 478 to 3,278 nm that yields an ultra-wide bandwidth of 2,800 nm. The structure consists of a top-layer-patterned metal-insulator-metal (MIM) configuration, into the insulator layer of which, an ultra-thin 5 nm layer of Manganese (Mn) is embedded. The MIM configuration represents a Ti-Al 2 O 3 -Ti tri-layer. It is shown that, without the ultra-thin layer of Mn, the absorption bandwidth is reduced to 274 nm. Therefore, adding only a 5 nm layer of Mn leads to a more than tenfold increase in the width of the absorption band. It is explained in detail that the physical mechanism contributing to this ultra-broadband result is a combination of plasmonic and non-plasmonic resonance modes, along with the appropriate optical properties of Mn. This structure has the relative bandwidth (RBW) of 149%, while only one step of lithography is required for its fabrication, so it is relatively simple to fabricate. This makes it rather promising for practical applications.

show abstract

“…Absorption over a large range of incidence angles and consequently weak angular dependence of the optical response is frequently required for technical perfect absorber applications such as detectors or antireflection coatings . The presented metamaterial with sub‐wavelength periodicity, supporting localized surface plasmon modes, is an ideal candidate to avoid angle‐dependent effects arising from diffractive orders.…”

Section: Angular Dependencementioning

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

Broadband near-infrared metamaterial absorbers utilizing highly lossy metals

Cited by 274 publications

References 34 publications

Gradient metasurfaces: a review of fundamentals and applications

Gradient metasurfaces: a review of fundamentals and applications

A Route to Unusually Broadband Plasmonic Absorption Spanning from Visible to Mid-infrared

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

Contact Info

Product

Resources

About