Subwavelength optical absorber with an integrated photon sorter

Perchec, Jérôme Le; Désières, Y.; Rochat, N.; Lamaëstre, R. Espiau de

doi:10.1063/1.3694749

Cited by 67 publications

(30 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to achieve a broad range of absorption, one direct strategy is to merge multiple absorption peaks into a wide band. Practically, we can combine several subunits laterally in one period [14][15][16][17][18][19][20]. However, the possible number of subunits, which decides the amount of resonances along with absorption bandwidth, is very finite [20].…”

Section: Introductionmentioning

confidence: 99%

Ultrabroadband Mid-infrared Light Absorption Based on a Multi-cavity Plasmonic Metamaterial Array

2015

View full text Add to dashboard Cite

We present a broadband plasmonic metamaterial absorber in the infrared region based on localized surface plasmon polaritons (LSPPs). The unit cell of the proposed metamaterial absorber consists of a multi-cavity structure, in which absorption resonances can be tuned independently through the modification of the width and shift of metallic walls. In order to avoid the degeneration between two contiguous resonances, which dramatically reduces the bandwidth, we introduce a zigzag design rule to arrange the cavities within a compact unit. Thus, the possible number of resonances is greatly increased, enabling an ultrabroadband absorption. A broadband absorber is demonstrated with only a few-layer structure and it also has an incident-angle-insensitive feature. Our results have potential applications in photovoltaic devices, emitters, sensors, and camouflage systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrabroadband Mid-infrared Light Absorption Based on a Multi-cavity Plasmonic Metamaterial Array

2015

View full text Add to dashboard Cite

show abstract

“…Since they were first demonstrated by experiment [2], the design and fabrication of metamaterial absorbers have been investigated intensively, finding a vast range of potential applications including biochemical sensors [3], bolometers [4] and tunable photon detectors [5]. However, the conventional metamaterial absorber with a single absorption band can hardly meet the requirement in some fields such as spectroscopic detection or energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Demonstrations of a Dual-Band Metamaterial Absorber at Mid-Infrared

Wen

2014

IEEE Photon. Technol. Lett.

View full text Add to dashboard Cite

We present the design, fabrication, and physical interpretation of an infrared dual-band metamaterial absorber. The unit cell of the metamaterial absorber consists of a cross resonator ringed by four split-ring resonators spaced a distance above a gold ground plane with a dielectric layer of SiO 2 . The absorber shows two absorption peaks of 90.3% and 88.4% at 4.17 µm and 4.86 µm, respectively. The multireflection interference theory is applied to explain the absorption mechanism with the gold ground plane described by Drude model, and the theoretical calculation agrees well with the simulations and experiments. In addition, the designed absorber is insensitive to incident angle and polarization direction in a broad range, which are highly favorable features in practical applications.

show abstract

“…The electrophoretic control of the average dielectric permittivity can be used to tune the transmission and reflection properties of the metasurfaces, which is very attractive for the design of highly efficient light harvesting solar cells 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Optical properties of aqueous dispersions of diamond nanoparticles

et al. 2013

View full text Add to dashboard Cite

Optical metasurfaces demonstrate outstanding capabilities of optical parameters modifications by changes in the structural architecture at the nano-scale level. We demonstrate results of electrophoretic experiments that modify the structure of a metasurface by using diamond nanoparticles with sizes much smaller than the wavelength of light; the nanoparticles are suspended in an aqueous solution and a uniform electric field is applied. The electric field controls the concentration of nanoparticles inside the sub-wavelength apertures and on the top plane of the metasurface. The higher concentration of diamond nanoparticles increases the refractive index of the suspension as well as increasing scattering and absorption. Results of optical material parameter characterization for a wavelength of 512 nm are provided for different concentrations of the diamond nanoparticles dispersions.

show abstract

Subwavelength optical absorber with an integrated photon sorter

Cited by 67 publications

References 14 publications

Ultrabroadband Mid-infrared Light Absorption Based on a Multi-cavity Plasmonic Metamaterial Array

Ultrabroadband Mid-infrared Light Absorption Based on a Multi-cavity Plasmonic Metamaterial Array

Theoretical and Experimental Demonstrations of a Dual-Band Metamaterial Absorber at Mid-Infrared

Optical properties of aqueous dispersions of diamond nanoparticles

Contact Info

Product

Resources

About