Publications by authors named "Arnaud Jollivet"
Applications relying on mid-infrared radiation (λ ~ 3-30 μm) have progressed at a very rapid pace in recent years, stimulated by scientific and technological breakthroughs like mid-infrared cameras and quantum cascade lasers. On the other side, standalone and broadband devices allowing control of the beam amplitude and/or phase at ultra-fast rates (GHz or more) are still missing. Here we show a free-space amplitude modulator for mid-infrared radiation (λ ~ 10 μm) that can operate at room temperature up to at least 1.
View Article and Find Full Text PDFArticle Synopsis
- The study examines the electrical and optical properties of single GaN nanowire p-n junctions created through plasma-assisted molecular-beam epitaxy with magnesium and silicon as doping sources.
- It compares different junction structures (n-base vs. p-base) using various analytical techniques, highlighting that n-base structures display more wire-to-wire shape variation due to radial growth influenced by magnesium doping.
- By switching to p-base junctions, researchers achieved a more consistent and well-defined structure while maintaining good optical quality and high hole concentration without damaging the nanowire's shape.