Información del autor
Documentos disponibles escritos por este autor (11)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
Cuadrado, Alexander ; López-Alonso, José Manuel ; Martínez Antón, Juan Carlos ; Ezquerro Rodríguez, José Miguel ; González, Francisco Javier ; Alda, Javier | SPIE | 2015-08-28Fractal antennas have been proposed to improve the bandwidth of resonant structures and optical antennas. Their multiband characteristics are of interest in radiofrequency and microwave technologies. In this contribution we link the geometry of [...]texto impreso
Alda, Javier ; López-Alonso, José Manuel ; Boreman, Glenn ; Rico-García, José María | Puntex | 2005-05La investigación sobre el comportamiento de estructuras metálicas cuyo tamaño es comparable a la longitud de onda de la radiación detectada puede realizarse considerándolas como antenas detectoras de radiación óptica. El diseño, análisis y carac[...]texto impreso
FDTD algorithms are being used as a numeric tool for the analysis of photonic crystals. The definition of the modes associated with them is of interest for the study of the capabilities of photonic crystal devices. The Principal Component Analys[...]texto impreso
Rico-García, José María ; López-Alonso, José Manuel ; Alda, Javier | OSA (Optical Society of America) Publishing | 2005-05-16The manufacture of a photonic crystal always produce deviations from the ideal case. In this paper we present a detailed analysis of the influence of the manufacture errors in the resulting electric field distribution of a photonic crystal micro[...]texto impreso
Alda, Javier ; Rico-García, José María ; López-Alonso, José Manuel ; Lail, Brian | Elsevier | 2006-04-15The design of plane Fresnel zone plates, and binary-staircase kinoforms, has been analyzed in this paper for a non-imaging application aimed to increase the performance of point-like detectors. They maximize the irradiance at the focal point of [...]texto impreso
Cuadrado, Alexander ; López-Alonso, José Manuel ; Martínez Antón, Juan Carlos ; Ezquerro Rodríguez, José Miguel ; González, Francisco Javier ; Alda, Javier | SPIE | 2015-08-28The practical application of optical antennas in detection devices strongly depends on its ability to produce an acceptable signal-to-noise ratio for the given task. It is known that, due to the intrinsic problems arising from its sub-wavelength[...]texto impreso
The far-field scattered in the infrared by an arrangement of metallic structures deposited on a dielectric wafer is estimated in this paper. The scattering is modelled by using operators that describe the far field obtained under the regime appl[...]texto impreso
Rico-García, José María ; López-Alonso, José Manuel ; Lail, Brian ; Boreman, Glenn ; Alda, Javier | SPIE | 2004-12-06Fresnel Zone Plate Lenses (FZPLs) have been successfully coupled to infrared (IR) antennas producing a responsivity enhancement of about two orders of magnitude. However, their lateral extension may compromise their applicability in focal-plane-[...]texto impreso
Alda, Javier ; Rico-García, José María ; López-Alonso, José Manuel ; Boreman, Glenn | Egyptian Society of Solid State Science & Applications | 2005Antenna-coupled optical detectors, also named as optical antennas, are being developed as detection devices with micro- and nano-scale features for their use in the millimetre, infrared, and visible spectral range. They are optical components th[...]texto impreso
We demonstrate the capabilities of principal component analysis (PCA) for studying the results of finite-difference time-domain (FDTD) algorithms in simulating photonic crystal microcavities. The spatial-temporal structures provided by PCA are r[...]texto impreso
Cuadrado, Alexander ; Silva-López, Manuel ; López-Alonso, José Manuel ; Martínez Antón, Juan Carlos ; Ezquerro Rodríguez, José Miguel ; González, Francisco Javier ; Alda, Javier | SPIE | 2015-08-28One of the main technical difficulties in the fabrication of optical antennas working as light detectors is the proper design and manufacture of auxiliary elements as load lines and signal extraction structures. These elements need to be quite s[...]
