Díaz Escobar, Evelyn(Universitat Politècnica de València, 2023-04-18)
[ES] Las nanopartículas de alto índice admiten multipolos electromagnéticos que determinan su respuesta a una onda incidente. Cuando se excitan diferentes multipolos, estos pueden interferir, dando lugar a fenómenos ...
Optical forces allow manipulation of small particles and control of nanophotonic structures
with light beams. While some techniques rely on structured light to move particles using field intensity gradients, acting locally, ...
[EN] Far-field scattering of high-index nanoparticles can be hugely reduced via interference of multipolar moments giving rise to the so-called anapole states. It has been suggested that this reduced scattering can contribute ...
We experimentally demonstrate a low-loss multilayered metamaterial exhibiting a double-negative refractive index in the visible spectral range. To this end, we exploit a second-order magnetic resonance of the so-called ...
Lorente Crespo, María; Wang, Li; Ortuño Molinero, Rubén; García Meca, Carlos; Ekinci, Yasin; Martínez Abietar, Alejandro José(American Chemical Society, 2013-06)
Ligh-matter interaction at optical frequencies is mostly mediated by the electric component of the
electromagnetic field, with the magnetic component usually being considered negligible. Recently, it has been shown that ...
Lorente Crespo, María(Universitat Politècnica de València, 2013-07-08)
[ES] En este trabajo se demuestra que la resonancia plasmónica excitada en un array de nano-anillos de oro bajo incidencia normal cambia de carácter, de eléctrico a magnético, si los anillos tienen una altura lo sufientemente ...
Ortuño Molinero, Rubén(Universitat Politècnica de València, 2011-11-03)
[ES] En este trabajo mostramos mediante un análisis numérico como un cristal fotónico puede
mimetizar el comportamiento de un metamaterial con un índice de refracción negativo igual a -1. Una
resolución sublambda se ...
[EN] Cavity optomechanics has recently emerged as a new paradigm enabling the manipulation of mechanical motion via optical fields tightly confined in deformable cavities. When driving an optomechanical (OM) crystal cavity ...
[EN] Expanding ideas from microwaves, we demonstrate experimentally a terahertz inductor by using meander-lines in a canonical extraordinary transmission (ET) hole array leading to a strong resonance¿s redshift and an ...
We present a mid-infrared inductor that when applied to an extraordinary transmission hole array produces a strong redshift of the resonant peak accompanied by an unprecedented enlargement of the operation bandwidth. The ...
[EN] The interaction of light and sound waves at the micro and nanoscale has attracted considerable interest in recent years. The main reason is that this interaction is responsible for a wide variety of intriguing physical ...
Ortuño Molinero, Rubén; García Meca, Carlos; Rodríguez Fortuño, Francisco José; Martí Sendra, Javier; Martínez Abietar, Alejandro José(Optical Society of America: Open Access Journals, 2010-04-12)
We study numerically and theoretically the optical transmission of nanostructured gold films embedded in dielectric claddings. We show how multiple transmission peaks appear as the claddings thickness increases. These ...
[EN] Silicon on insulator photonics has offered a versatile platform for the recent development of integrated optomechanical circuits. However, there are some constraints such as the high cost of the wafers and limitation ...
Rodríguez Fortuño, Francisco José; Marino, Giuseppe; Ginzburg, Pavel; O’Connor, Daniel; Martínez Abietar, Alejandro José; Wurtz, Gregory A.; Zayats, Anatoly V.(American Association for the Advancement of Science, 2013-04-19)
Wave interference is a fundamental manifestation of the superposition principle with numerous applications. Although in conventional optics, interference occurs between waves undergoing different phase advances during ...
[EN] Optical nonlinearities, such as thermo-optic mechanisms and free-carrier dispersion, are often considered unwelcome effects in silicon-based resonators and, more specifically, optomechanical cavities, since they affect, ...
Espinosa Soria, Alba; Rodríguez Fortuño, Francisco José; Griol Barres, Amadeu; Martínez Abietar, Alejandro José(American Chemical Society, 2017)
[EN] Full measurement of the polarization of light at the nanoscale is expected to be crucial in many scientific and technological disciplines. Ideally, such measurements will require miniaturized Stokes polarimeters able ...
Navarro-Urrios, D.; Gomis-Bresco, J.; Capuj, N. E.; Alzina, F.; Griol Barres, Amadeu; Puerto Garcia, Daniel; Martínez Abietar, Alejandro José; Sotomayor-Torres, C. M.(American Institute of Physics (AIP), 2014-09-07)
[EN] We report on the modification of the optical and mechanical properties of a silicon 1D optomechanical crystal cavity due to thermo-optic effects in a high phonon/photon population regime. The cavity heats up due to ...
Vázquez-Lozano, Juan Enrique; Martínez Abietar, Alejandro José(American Physical Society, 2018)
[EN] Several dynamical properties of electromagnetic waves such as energy, momentum, angular momentum, and optical helicity have been recently reexamined in dispersive and lossless media. Here, we address an alternative ...
Escalante Fernández, José María; Martínez Abietar, Alejandro José(Springer-Verlag, 2013)
[EN] Optical gain that could ultimately lead to light emission from silicon is a goal that has been pursued for a long time by the scientific community. The reason is that a silicon laser would allow for the development ...
Castelló Pedrero, Lucía(Universitat Politècnica de València, 2021-07-26)
[ES] Actualmente, el Instituto Universitario de Tecnología Nanofotónica (NTC) y la spin-off Lumensia Sensors participan en el proyecto europeo SaPher, donde se pretende desarrollar y comercializar una plataforma de sensado ...