Halide perovskites represent one of the most promising candidates in the solar harvesting industry, thanks
to their high conversion efficiency, conductive properties, and bandgap tunability. However, due to the presence
of lead in their chemical structure, these materials present some safety and environmental concerns. For this
reason, a big interest in now driving research on perovskite...
High harmonics generation (HHG) is a process which gives a direct insight into nonlinear properties of matter. Modern quantum materials like graphene or topological insulators attract considerable interest from scientific communities interested in the fundamental understanding of the often-exotic light-matter interactions as well as in the search for new technological applications. We mastered...
The increase in need for high bandwidth telecommunications necessitates higher frequencies while also keeping enough output RF power to allow wireless communications. In this context, the project T-REX 6G (THz transistoR Experience for 6G) aims to develop Double Heterojunction Bipolar Transistor (DHBT) in III-V materials that can be stacked on Silicon substrate and be compatible with Silicon...
As high-field THz sources are currently getting more broadly employed, it becomes increasingly important to characterize intense single-cycle THz fields (> 1 MV/cm) in amplitude and phase without saturation or nonlinearities in the electro-optic detection. After previous attempts of spectrally neutral attenuation, z-cut α-quartz has been recently found as a suitable electro-optic sampling...
This abstract introduces a preliminary research project aimed at addressing errors in pump probe measurement caused by temporal jitter between optical and terahertz (THz) pulses, utilizing a cross-correlation spectrometer. The timing shifts in laser pulses arise from environmental conditions, amplifier noise, or non-linear effects causing optical path length fluctuations. These present a...
Abstract— In recent years, short pulse lasers have made massive progress and space-ready femtosecond laser systems are under development [1]. Moreover, employing time-domain spectroscopy techniques to identify planetary minerals by their spectroscopic fingerprints in the infrared and terahertz frequency range can have technological advantages over conventional spectroscopic techniques such as...
Accessing the dynamics of elementary excitations requires an ultrafast measurement technique as the lifetimes of these excitations are on the scale of nano-seconds to pico-seconds. To access these time scales, pump-probe scheme using ultrashort laser pulses are the method of choice. However, most of these spectroscopic techniques lack spatial resolution as the signal originates from large...
In addition to spin angular momentum, which determines the circular polarization of light, electromagnetic radiation can also carry orbital angular momentum. Photons with non-zero projection orbital momentum on the direction of propagation are called twisted photons. Such states of photons possess a fundamentally new additional degree of freedom that can find application in various areas of...
Univocal Determination of Electron Transfer Rates on Dye-Sensitized Metal Oxides: A Methodological Proposal
Miguel Ángel Pulido-Lendínez1, Marco Ballabio1, Andrés Burgos-Caminal1, María E. Corrales2, Sergio Revuelta1, Saül García-Orrit1, Víctor Vega-Mayoral1, Reinhold Wannemacher1, Juan Cabanillas–González1, Luis Bañares1,3, Wojciech Gawelda1,2, and Enrique Cánovas1,a)
1 Instituto...
