Multi‐Spectral Materials: Hybridisation of Optical Plasmonic Filters and a Terahertz Metamaterial Absorber

McCrindle, Iain J. H.; Grant, James P.; Drysdale, Timothy D.; Cumming, David R. S.

doi:10.1002/adom.201300408

Cited by 70 publications

(27 citation statements)

References 35 publications

(43 reference statements)

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“…A second challenge we have overcome is minimising the area of the MIR ERRs and the THz ERRs in order to maximise the visible transmission. The metal fill factor of the THz ERR in [9] is 33.6% whereas the THz ERR in our new SMM has a metal fill factor of only 4.3%. The MIR ERR introduced into the stack has a metal fill factor of 20% rendering a total metal fill factor of the new SMM of 24.3%.…”

Section: Device Design and Simulationmentioning

confidence: 77%

“…The square unit cell period is 40 μm in length and contains 225 MIR ERRs and up to 30000 nanoholes (depending on the hole period). Our SMM is inspired by the structure presented in [9] where visible plasmonic filters are patterned in a 150 nm thick Al film, a 3 μm thick layer of plasma enhanced chemical vapour deposition (PECVD) SiO 2 deposited on top and finally a metallic THz ERR defined. For our new SMM we insert an array of MIR ERRs between the plasmonic filters and the THz ERR.…”

Section: Device Design and Simulationmentioning

confidence: 99%

“…Synthetic multi-spectral materials (SMMs): structured materials capable of operating over different wavebands simultaneously, offer a way to coaxially filter and absorb visible, IR and THz radiation and therefore offer an attractive alternative to conventional detection methods [6][7][8][9][10]. SMMs exploit hybridised metamaterial and plasmonic structures to combine multi-spectral functionalities into a single material.…”

Section: Introductionmentioning

confidence: 99%

“…By scaling the plasmonic and MM geometries and selecting the appropriate constituent materials one can realise a universally multifunctional optical material in any waveband from the visible to mm wave. In previous work we have developed SMMs that can: (1) filter visible, near infrared (NIR) and THz [10]; (2) filter visible, NIR and absorb THz [9]; (3) filter visible, NIR and mid IR (MIR) and absorb THz [8] and (4) absorb both MIR and THz [7]. In this paper we demonstrate through simulations and experimentally a SMM capable of filtering 15 visible wavelengths and one NIR wavelength while also absorbing MIR and THz radiation.…”

Section: Introductionmentioning

confidence: 99%

“…Filters fabricated into a metal layer as part of the CMOS process offer a solution to substantial cross-talk between different colours that is expected as CMOS imagers scale to smaller sizes [18]. It is also possible to extend the operation of plasmonic filters to MIR wavelengths by further scaling of the hole size and period [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

2016

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Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials and detectors in order to operate simultaneously in multiple spectral regions. Each distinct waveband must be detected at different spatial locations on a single chip or by separate chips optimised for each band. Here, we report on a single component that optically multiplexes visible, Mid Infrared (4.5 μm) and Terahertz (126 μm) radiation thereby maximising the spectral information density. We hybridise plasmonic and metamaterial structures to form a device capable of simultaneously filtering 15 visible wavelengths and absorbing Mid Infrared and Terahertz. Our synthetic multi-spectral component could be integrated with silicon complementary metal-oxide semiconductor technology where Si photodiodes are available to detect the visible radiation and micro-bolometers available to detect the Infrared/Terahertz and render an inexpensive, mass-producible camera capable of forming coaxial visible, Infrared and Terahertz images.

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Section: Device Design and Simulationmentioning

confidence: 77%

Section: Device Design and Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

2016

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A Switchable Mid‐Infrared Plasmonic Perfect Absorber with Multispectral Thermal Imaging Capability

et al. 2015

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A switchable perfect absorber with multispectral thermal imaging capability is presented. Aluminum nanoantenna arrays above a germanium antimony telluride (GST) spacer layer and aluminum mirror provide efficient wavelength-tunable absorption in the mid-infrared. Utilizing the amorphous-to-crystalline phase transition in GST, this device offers switchable absorption with strong reflectance contrast at resonance and large phase-change-induced spectral shifts.

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Photonic Metamaterial Absorbers: Morphology Engineering and Interdisciplinary Applications

et al. 2019

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Recent advances in nanofabrication technologies have spurred many breakthroughs in the field of photonic metamaterials that provide efficient ways of manipulating light–matter interaction at subwavelength scales. As one of the most important applications, photonic metamaterials can be used to implement novel optical absorbers. First the morphology engineering of various photonic metamaterial absorbers is discussed, which is highly associated with impendence matching conditions and resonance modes of the absorbers, thus directly determines their absorption efficiency, operational bandwidth, incident angle, and polarization dependence. Then, the recent achievements of various interdisciplinary applications based on photonic metamaterial absorbers, including structural color generation, ultrasensitive optical sensing, solar steam generation, and highly responsive photodetection, are reviewed. This report is expected to provide an overview and vision for the future development of photonic metamaterial absorbers and their applications in novel nanophotonic systems.

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Multi‐Spectral Materials: Hybridisation of Optical Plasmonic Filters and a Terahertz Metamaterial Absorber

Cited by 70 publications

References 35 publications

Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

Multi-spectral materials: hybridisation of optical plasmonic filters, a mid infrared metamaterial absorber and a terahertz metamaterial absorber

A Switchable Mid‐Infrared Plasmonic Perfect Absorber with Multispectral Thermal Imaging Capability

Photonic Metamaterial Absorbers: Morphology Engineering and Interdisciplinary Applications

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