17 citations · 29 across the 7 of their papers we have counts for
7 papers
Cathodoluminescence, light injection and EELS in STEM: From comparative to coincidence experiments
Luiz H. G. Tizei, Yves Auad, Florian Castioni +1
Electron spectroscopy implemented in electron microscopes provides high spatial resolution, down to the atomic scale, of the chemical, electronic, vibrational and optical propertie…
Advancing Time-Resolved Spectroscopies with Custom Scanning Units and Event-Based Electron Detection
Yves Auad, Florian Castioni, Jassem Baaboura +9
Direct electron detection is revolutionizing electron microscopy by offering lower noise, reduced point-spread function, and increased quantum efficiency. Among these advancements,…
Impact of electron beam propagation on high-resolution quantitative chemical analysis of 1 nm-wide GaN/AlGaN quantum wells
Florian Castioni, Patrick Quéméré, Sergi Cuesta +5
Recent advancements in high-resolution spectroscopy analyses within the scanning transmission electron microscope (STEM) have paved the way for measuring the concentration of chemi…
Nanosecond nanothermometry in an electron microscope
Florian Castioni, Yves Auad, Jean-Denis Blazit +8
Thermal transport in nanostructures plays a critical role in modern technologies. As devices shrink, techniques that can measure thermal properties at nanometer and nanosecond scal…
Excitation's lifetime extracted from electron-photon (EELS-CL) nanosecond-scale temporal coincidences
Nadezda Varkentina, Yves Auad, Steffi Y. Woo +9
Electron-photon temporal correlations in electron energy loss (EELS) and cathodoluminescence (CL) spectroscopies have recently been used to measure the relative quantum efficiency…
Reduction of the lasing threshold in optically pumped AlGaN/GaN lasers with two-step etched facets
Sergi Cuesta, Lou Denaix, Florian Castioni +2
We report a two-step process to obtain smooth and vertical {10-10} m-plane facets in AlGaN/GaN separate confinement heterostructures designed to fabricate UV lasers emitting at 355…
Optical net gain measurement on AlGaN/GaN multi-quantum well
Quang Minh Thai, Sergi Cuesta, Lou Denaix +5
We present net gain measurements at room temperature in AlGaN/GaN 10-period multi-quantum well emitting at 367 nm, using the variable stripe length method. Measur…