David Hernández Pinilla

Universidad Autónoma de Madrid | UAM · Dept. of Physics of Materials

Coherent light sources providing sub‐wavelength confined modes are in ever more demand to face new challenges in a variety of disciplines. Scalability and cost‐effective production of these systems are also highly desired. The use of ferroelectrics in functional optical platforms, on which plasmonic arrangements can be formed, is revealed as a simp...

The demonstration of plasmon-assisted lasing by associating optical gain media with plasmonic nanostructures has led to a new generation of nanophotonic devices with unprecedented performances. However, despite the variety of designs demonstrated so far, the operation of these systems is in most cases limited to a single output wavelength, and some...

A novel absorbing composite based on MoSi2-Si3N4 has been investigated to be used in high temperature solar selective coating applications. Simulation of the reflectance from the complex dielectric permittivity of the components has allowed the optimization of its optical characteristics. The sputtering deposited whole multilayer stacks, formed by...

The association of 2D materials and ferroelectrics offers a promising approach to tune the optoelectronic properties of atomically thin Transition Metal Dichalcogenides (TMDs). In this work, the combined effect of ferroelectricity and light on the optoelectronic properties of monolayer (1L)‐MoS2 deposited on periodically poled lithium niobate cryst...

We report on the fabrication and optical characterization of a new hybrid material consisting of Nd 3+ doped Y 2 O 3 submicron particles associated with linear chains of plasmonic nanostructures. By drop-casting deposition, single Nd 3+ doped Y 2 O 3 polycrystalline particles are dispersed and located in the vicinities of plasmonic chains of silver...

The current need for coherent light sources for integrated (nano)photonics motivates the search for novel laser designs emitting at technologically relevant wavelengths with high‐frequency stability and low power consumption. Here, a new monolithic architecture that integrates monolayer MoS 2 and chains of silver nanoparticles on a rare‐earth (Nd ³...

The association of metallic nanostructures and solid-state gain media has recently led to the emergence of functional platforms for nanolasing with relevant features such as chemical and thermal stability and the absence of photo-bleaching. In this work, we demonstrate that the incorporation of plasmonic nanoparticle chains on a Nd3+ doped solid-st...

The thermal stability in air of solar selective coatings based on the novel MoSi2–Si3N4 hybrid composite has been investigated here for the first time. Although thermal stability of solar absorbers is typically examined under vacuum, high temperature air stability is required for practical applications in concentration solar power (CSP) technologie...

The study of the chemical stability of solar selective coatings (SSC) for concentrated solar power (CSP) becomes essential for their use at high temperatures. In this paper, the short range order around Mo in Mo-Si 3 N 4 cermets is studied for the first time by X-ray absorption spectroscopy. The information obtained by extended X-ray absorption fin...

We have analyzed the effect of linear chains of metallic Ag nanoparticles on the optical properties of a periodically poled Yb³⁺-Er³⁺ co-doped LiNbO3 crystal. By exploiting the broad plasmonic response supported by linear chains of strongly coupled Ag nanoparticles, we demonstrate a 50% of enhancement of the up-converted Er³⁺ emission under excitat...

Data of optical performance, thermal stability and ageing are given for solar selective coatings (SSC) based on a novel MoSi2–Si3N4 absorbing composite. SSC have been prepared as multilayer stacks formed by silver as metallic infrared reflector, a double layer composite and an antireflective layer (doi: 10.1016/j.solmat.2016.04.001 [1]). Spectrosco...