Light passing through subwavelength apertures

García‐Vidal, F. J.; Martín‐Moreno, Luis; Ebbesen, Thomas W.; Kuipers, L.

doi:10.1103/revmodphys.82.729

Cited by 1,152 publications

(970 citation statements)

References 416 publications

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“…Imposing the appropriate matching conditions leads to a coupled system of equations for the modal amplitudes of the electric field at the entrance, E, and at the exit, E , of the cavities. In the case of subwavelength holes or grooves, considering only one mode per cavity (the T E 11 mode in both the hole and the grooves [25]) already provides a good approximation to the transmission properties [2,26]. In this case, the modal amplitudes are governed by: where n is an index that labels cavities (n = 0 for the hole, and n = 1....N for the grooves).…”

Section: Numerical Results and Theorymentioning

confidence: 99%

“…The Extraordinary Optical Transmission (EOT) through subwavelength apertures in metallic films [1,2] has received much attention since its first report [3]. In particular, periodic structures around a nano-aperture are of great interest because the optical transmittance through these systems can be largely tailored with respect to that of an isolated aperture.…”

Section: Introductionmentioning

confidence: 99%

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Mechanisms for extraordinary optical transmission through bull’s eye structures

et al. 2011

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Abstract:We analyze both experimentally and theoretically the physical mechanisms that determine the optical transmission through deep subwavelength bull's eye structures (concentric annular grooves surrounding a circular hole). Our analysis focus on the transmission resonance as a function of the distance between the central hole and its nearest groove. We find that, for that resonance, each groove behaves almost independently, acting as an optical cavity that couples to incident radiation, and reflecting the surface plasmons radiated by the other side of the same cavity. It is the constructive contribution at the central hole of these standing waves emitted by independent grooves which ends up enhancing transmission. Also for each groove the coupling and reflection coefficients for surface plasmons are incorporated into a phenomenological Huygens-Fresnel model that gathers the main mechanisms to enhance transmission. Additionally, it is shown that the system presents a collective resonance in the electric field that does not lead to resonant transmission, because the fields radiated by the grooves do not interfere constructively at the central hole.

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Section: Numerical Results and Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanisms for extraordinary optical transmission through bull’s eye structures

et al. 2011

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“…[19][20][21][22][23][24] By varying the size, shape, thickness and periodicity of the array, it is known that the permitted plasmon coupling frequency can be tuned, dictating the color of the transmitted light. 15,17,25,26 Typically, plasmonic cavity-aperture filters are comprised of circular nano-holes tuned to operate efficiently at a single wavelength. 27 However, in filtering applications such as polarimetry microscopy, security encryption and hyperspectral imaging, often dual or multi-color filtering is necessary, a requirement currently enabled by increasing the number of different filtering elements.…”

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confidence: 99%

Dual Color Plasmonic Pixels Create a Polarization Controlled Nano Color Palette

2016

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Color filters based upon nano-structured metals have garnered significant interest in recent years, having been positioned as alternatives to the organic dye-based filters which provide color selectivity in image sensors, as non-fading 'printing' technologies for producing images with nanometer pixel resolution, and as ultra-high-resolution, small foot-print optical storage and encoding solutions. Here, we demonstrate a plasmonic filter set with polarizationswitchable color properties, based upon arrays of asymmetric cross-shaped nano-apertures in an aluminum thin-film. Acting as individual color-emitting nano-pixels, the plasmonic cavityapertures have dual-color selectivity, transmitting one of two visible colors, controlled by the polarization of the white light incident on the rear of the pixel and tuned by varying the critical dimensions of the geometry and periodicity of the array. This structural approach to switchable optical filtering enables a single nano-aperture to encode two information states within the same physical nano-aperture; an attribute we use here to create micro image displays containing duality in their optical information states.

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“…All these phenomena are now generically known as extraordinary optical transmission (EOT). 11 Recently, another case of EOT has been unveiled: absorption induced transparency (AIT). 12 Roughly speaking, AIT refers to an enhancement in the transmittance through hole arrays that appears when an absorbing dye is deposited on them.…”

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confidence: 99%

Theory of absorption-induced transparency

2013

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Recent experiments [Hutchison, O'Carroll, Schwartz, Genet, and Ebbesen, Angew. Chem. Int. Ed. 50, 2085 (2011)] have demonstrated that optical transmission through an array of subwavelength holes in a metal film can be enhanced by the intentional presence of dyes in the system. As the transmission maximum occurs spectrally close to the absorption resonances of the dyes, this phenomenon was christened "absorption induced transparency". Here, a theoretical study on absorption induced transparency is presented. The results show that the appearance of transmission maxima requires that the absorbent fills the holes and that it occurs also for single holes. Furthermore, it is shown that the transmission process is nonresonant, being composed by a sequential passage of the electromagnetic field through the hole. Finally, the physical origin of the phenomenon is demonstrated to be nonplasmonic, which implies that absorption induced transparency should also occur at the infrared or terahertz frequency regimes.

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Light passing through subwavelength apertures

Cited by 1,152 publications

References 416 publications

Mechanisms for extraordinary optical transmission through bull’s eye structures

Mechanisms for extraordinary optical transmission through bull’s eye structures

Dual Color Plasmonic Pixels Create a Polarization Controlled Nano Color Palette

Theory of absorption-induced transparency

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