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Listar por palabra clave "Transformation optics"

Mostrando ítems 1-9 de 9

Exciting surface plasmons with transformation media

García Meca, Carlos; Ortuño Molinero, Rubén; Martí Sendra, Javier; Martínez Abietar, Alejandro José (Springer Verlag (Germany), 2012-12)

We present a way of exciting surface plasmon polaritons along non-patterned metallic surfaces by means of a flat squeezing slab designed with transformation optics. The slab changes the dispersion relation of incident ...
Full three-dimensional isotropic transformation media

García Meca, Carlos; Ortuño Molinero, Rubén; Martí Sendra, Javier; Martínez Abietar, Alejandro José (IOP Publishing: Open Access Journals, 2014-02-21)

We present a method that enables the implementation of full three-dimensional (3D) transformation media with minimized anisotropy. It is based on a special kind of shape-preserving mapping and a subsequent optimization ...
Imaging Cloaked Objects: Diffraction Tomography of Realistic Invisibility Devices

Díaz-Fernández, Francisco Javier; Martí Sendra, Javier; García Meca, Carlos (John Wiley & Sons, 2023-02)

[EN] Invisibility cloaks have become one of the most outstanding developments among the wide range of applications in the field of metamaterials. So far, most efforts in invisibility science have been devoted to achieving ...
Nontensorial transformation optics

García Meca, Carlos; Barceló, Carlos (American Physical Society, 2016-06-17)

[EN] We present an alternative version of transformation optics that allows us to mold the flow of light without rotating or scaling the electromagnetic fields. The resulting media experience unusual force densities, are ...
Novel Applications of Optical Diffraction Tomography: On-chip Microscopy and Detection of Invisibility Cloaks

Díaz Fernández, Francisco Javier (Universitat Politècnica de València, 2022-01-21)

[ES] La tomografía por difracción surge para mejorar las técnicas de imagen al considerar la naturaleza ondulatoria de la luz. Mientras que los primeros sistemas de imagen médica se basaban únicamente en fuentes sin ...
Partial transmutation of singularities in optical instruments

Perczel, Janos; García Meca, Carlos; Leonhardt, Ulf (IOP Publishing, 2011-07)

Some interesting optical instruments such as the Eaton lens and the invisible sphere require singularities of the refractive index for their implementation. We show how to transmute those singularities into harmless ...
Programmable photonic circuits

Bogaerts, Wim; Pérez-López, Daniel; Capmany Francoy, José; Miller, David A. B.; Poon, Joyce; Englund, Dirk; Morichetti, Francesco; Melloni, Andrea (Nature Publishing Group, 2020-10-08)

[EN] The growing maturity of integrated photonic technology makes it possible to build increasingly large and complex photonic circuits on the surface of a chip. Today, most of these circuits are designed for a specific ...
Squeezing and expanding light without reflections via transformation optics

García Meca, Carlos; Tung, Michael Ming-Sha; Galán Conejos, José Vicente; Ortuño Molinero, Rubén; Rodríguez Fortuño, Francisco José; Martí Sendra, Javier; Martínez Abietar, Alejandro José (2011)

[EN] We study the reflection properties of squeezing devices based on transformation optics. An analytical expression for the angle-dependent reflection coefficient of a generic three-dimensional squeezer is derived. In ...
The variational principle in transformation optics engineering and some applications

García Meca, Carlos; Tung, Michael Ming-Sha (Elsevier, 2013)

Transformation optics specializes in the engineering of advanced optical devices, and in combination with differential geometry it allows to control electromagnetic fields with artificial media in an unprecedented manner. ...