Broadband and highly absorbing multilayer structure in mid-infrared

Peng, Hao; Luo, Yong; Ying, Xiangxiao; Pu, Yang; Jiang, Yadong; Xu, Jimmy; Liu, Zhijun

doi:10.1364/ao.55.008833

Cited by 32 publications

(13 citation statements)

References 29 publications

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“…In this paper, these structures are excluded and instead focus is made on the conventional MIM-PMAs, shown as Figure 2 . Other structures such as core-shell nanoparticles [ 76 ] and multi-flat-layer structures [ 77 , 78 , 79 ] can be considered to have a principle similar to that of MIM-PMAs.…”

Section: Structures and Materialsmentioning

confidence: 99%

“…However, these structures increase the thickness and volume of the absorbers, and cause difficulties for fabrication. Care should be taken in applying them to practical devices by comparison with other convenient structures such as simple multi-flat-layer structures [ 77 , 78 , 79 ] or gold black [ 104 , 105 ] in terms of their thickness, ease of fabrication, and cost.…”

Section: Multi-band and Broadband Operationmentioning

confidence: 99%

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Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

2018

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Electromagnetic wave absorbers have been investigated for many years with the aim of achieving high absorbance and tunability of both the absorption wavelength and the operation mode by geometrical control, small and thin absorber volume, and simple fabrication. There is particular interest in metal-insulator-metal-based plasmonic metamaterial absorbers (MIM-PMAs) due to their complete fulfillment of these demands. MIM-PMAs consist of top periodic micropatches, a middle dielectric layer, and a bottom reflector layer to generate strong localized surface plasmon resonance at absorption wavelengths. In particular, in the visible and infrared (IR) wavelength regions, a wide range of applications is expected, such as solar cells, refractive index sensors, optical camouflage, cloaking, optical switches, color pixels, thermal IR sensors, IR microscopy and gas sensing. The promising properties of MIM-PMAs are attributed to the simple plasmonic resonance localized at the top micropatch resonators formed by the MIMs. Here, various types of MIM-PMAs are reviewed in terms of their historical background, basic physics, operation mode design, and future challenges to clarify their underlying basic design principles and introduce various applications. The principles presented in this review paper can be applied to other wavelength regions such as the ultraviolet, terahertz, and microwave regions.

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Section: Structures and Materialsmentioning

confidence: 99%

Section: Multi-band and Broadband Operationmentioning

confidence: 99%

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

2018

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“…An IM structure (Deng et al, 2015;Peng et al, 2016) utilizes a specially designed dielectric and metal stack layer to match the structure impedance to the free space value, therefore, allowing the light with a specific wavelength to be absorbed by the interval metal layer while penetrating into the whole structure with little reflection. A QW structure (Parsons and Pedder, 1988) can decrease the reflection within a certain wavelength region and result in a higher absorption, while the absorption region depends on the intrinsic refractive index properties of the adopted material.…”

Section: Structure Design and Fabricationmentioning

confidence: 99%

“…Comparing with the optical wavelength, the metal thickness is ultrathin, i.e., κ0dm << 1. To obtain a broadband absorption region for our target wavelength region, 40-nmthick lossy type metal (Peng et al, 2016), titanium was chosen as the interval metal layer. For a given metal layer, M is constant, according to Eq.…”

Section: Structure Design and Fabricationmentioning

confidence: 99%

Atmospheric-Window-Matching Hierarchical Broadband Infrared Absorber Realized by Lithography-Free Fabrication

et al. 2018

Front. Energy Res.

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An ultra-broadband selective absorber has been realized with a hierarchical structure through integrating vacuum impedance-matched structure, quarter wavelength structure, and gradient refractive index structure. Through optimizing the design parameters of the proposed hierarchical structure, an ultra-broadband infrared absorber covering the three major atmospheric windows (0.7-2.5, 3-5, and 8-14 μm) has been numerically and experimentally demonstrated. An overall absorption up to 80% covering all the three major atmospheric infrared windows and a ratio of the total absorptions within and beyond the windows as high as 5.88 has been achieved with the developed absorber. The high absorption and spectral selectivity of the absorber make it promising for sensitive broadband infrared spectroscopy detection. The proposed hierarchical structure also provides great design freedom with many tunable factors, making it convenient to extend the design for other applications. In addition, we developed a cost-effective lithography-free method for the fabrication of this structure. The design flexibility and fabrication convenience of this hierarchical structure render it suitable for the development of tailored selective broadband absorbers for targeted applications.

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“…Metals, with their lossy nature in the whole electromagnetic (EM) spectrum, are the most frequently utilized materials in the MPA design. These ultrathin metal-based MPAs can operate in narrow or broad frequency ranges [17][18][19][20][21][22][23]. The narrowband perfect absorbers have potential applications in sensing and filtering, while the broad ones are used in solar vapor generation, photochemistry, and photodetection.…”

mentioning

confidence: 99%

Bismuth plasmonics for extraordinary light absorption in deep sub-wavelength geometries

et al. 2020

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In this Letter, we demonstrate an ultra-broadband metamaterial absorber of unrivaled bandwidth (BW) using extraordinary optical response of bismuth (Bi), which is the material selected through our novel analysis. Based on our theoretical model, we investigate the maximum metalinsulator-metal (MIM) cavity BW, achievable by any metal with known n-k data. We show that an ideal metal in such structures should have a positive real permittivity part in the near-infrared (NIR) regime. Contrary to noble and lossy metals utilized by most research groups in the field, this requirement is satisfied only by Bi, whose data greatly adhere to the ideal material properties predicted by our analysis. A Bi nanodisc-based MIM resonator with an absorption above 0.9 in an ultra-broadband range of 800 nm-2390 nm is designed, fabricated, and characterized. To the best of our knowledge, this is the broadest absorption BW reported for a MIM cavity in the NIR with its upper-to-lower absorption edge ratio exceeding best contenders by more than 150%. According to the findings in this Letter, the use of proper materials and dimensions will lead to realization of deep sub-wavelength efficient optical devices.

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Broadband and highly absorbing multilayer structure in mid-infrared

Cited by 32 publications

References 29 publications

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

Atmospheric-Window-Matching Hierarchical Broadband Infrared Absorber Realized by Lithography-Free Fabrication

Bismuth plasmonics for extraordinary light absorption in deep sub-wavelength geometries

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