Journal ArticleDOI
Extraordinary optical transmission through sub-wavelength hole arrays
Thomas W. Ebbesen,Thomas W. Ebbesen,Henri J. Lezec,H. F. Ghaemi,Tineke Thio,Peter A. Wolff,Peter A. Wolff +6 more
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TLDR
In this article, the optical properties of submicrometre cylindrical cavities in metallic films were explored and it was shown that arrays of such holes display highly unusual zero-order transmission spectra at wavelengths larger than the array period, beyond which no diffraction occurs.Abstract:
The desire to use and control photons in a manner analogous to the control of electrons in solids has inspired great interest in such topics as the localization of light, microcavity quantum electrodynamics and near-field optics1,2,3,4,5,6. A fundamental constraint in manipulating light is the extremely low transmittivity of apertures smaller than the wavelength of the incident photon. While exploring the optical properties of submicrometre cylindrical cavities in metallic films, we have found that arrays of such holes display highly unusual zero-order transmission spectra (where the incident and detected light are collinear) at wavelengths larger than the array period, beyond which no diffraction occurs. In particular, sharp peaks in transmission are observed at wavelengths as large as ten times the diameter of the cylinders. At these maxima the transmission efficiency can exceed unity (when normalized to the area of the holes), which is orders of magnitude greater than predicted by standard aperture theory. Our experiments provide evidence that these unusual optical properties are due to the coupling of light with plasmons — electronic excitations — on the surface of the periodically patterned metal film. Measurements of transmission as a function of the incident light angle result in a photonic band diagram. These findings may find application in novel photonic devices.read more
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Journal ArticleDOI
Quasi-cylindrical wave contribution in experiments on extraordinary optical transmission
TL;DR: From the measured transmission spectra, microscopic scattering parameters are determined which allow us to show that quasi-cylindrical waves affect EOT only for high densities, when the hole spacing is roughly one wavelength.
Journal ArticleDOI
Microfluidic Point-of-Care Devices: New Trends and Future Prospects for eHealth Diagnostics
J. R. Mejía-Salazar,Kamilla Rodrigues Cruz,Elsa María Materón Vásques,Elsa María Materón Vásques,Osvaldo N. Oliveira +4 more
TL;DR: The increasing use of big data and artificial intelligence methods is commented upon in the context of wearable and handled biosensing platforms for the Internet of things and futuristic healthcare systems.
Journal ArticleDOI
Shape resonance omni-directional terahertz filters with near-unity transmittance
Joong Wook Lee,Minah Seo,Doo Jae Park,Dai-Hong Kim,Sae Chae Jeoung,Ch. Lienau,Q-Han Park,Paul C. M. Planken +7 more
TL;DR: The results show that plasmonic structures with different geometric shaped holes are extremely versatile, dependable, easy to control and easy to make terahertz filters.
Journal ArticleDOI
Towards plasmonic band gap laser
TL;DR: In this paper, a dye film was applied on a corrugated silver surface to enhance the fluorescence of the dye, achieving an enhancement factor of 150 for a methyl-red doped poly (methylmethacrylate) film and 3 for an evaporated 4-dicyanomethylene-2-methyl-6-p-dimethyl-aminostyryl-4H-pyran film.
Journal ArticleDOI
Gap and channelled plasmons in tapered grooves: a review
Cameron L. C. Smith,Nicolas Stenger,Anders Kristensen,N. Asger Mortensen,Sergey I. Bozhevolnyi +4 more
TL;DR: This Review provides a research status update of plasmons in tapered grooves, starting with a presentation of the theory and important features of GSPs and CPPs, and following with an overview of the broad range of applications they enable or improve.
References
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Book
Principles of Optics
TL;DR: In this paper, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Principles of Optics
TL;DR: In this article, the authors discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals, including interference, interferometers, and diffraction.
Journal ArticleDOI
Theory of Diffraction by Small Holes
TL;DR: In this paper, the diffraction of electromagnetic radiation by a hole small compared with the wave-length is treated theoretically, and a complete solution is found satisfying Maxwell's equations and the boundary conditions everywhere.
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Near-Field Optics: Microscopy, Spectroscopy, and Surface Modification Beyond the Diffraction Limit
Eric Betzig,Jay K. Trautman +1 more
TL;DR: The near-field optical interaction between a sharp probe and a sample of interest can be exploited to image, spectroscopically probe, or modify surfaces at a resolution inaccessible by traditional far-field techniques, resulting in a technique of considerable versatility.
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Far-infrared properties of metallic mesh and its complementary structure
TL;DR: In this article, the optical properties of thin metallic mesh (inductive grids) are compared theoretically and experimentally with the properties of the complementary structure (capacitive grids) close interrelations are found in the non-diffraction region (wavelength > grid constant).