104 citations · 451 across the 15 of their papers we have counts for
16 papers
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…
Decorrelation of internal quantum efficiency and lasing threshold in AlGaN-based separate confinement heterostructures for UV emission
Sergi Cuesta, Lou Denaix, Le Si Dang +1
In this paper, we study the internal quantum efficiency and lasing threshold of AlGaN/GaN separate confinement heterostructures designed for ultraviolet laser emission. We discuss…
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…
AlGaN/GaN asymmetric graded-index separate confinement heterostructures designed for electron-beam pumped UV lasers
Sergi Cuesta, Yoann Curé, Fabrice Donatini +9
We present a study of undoped AlGaN/GaN separate confinement heterostructures designed to operate as electron beam pumped ultraviolet lasers. We discuss the effect of spontaneous a…
Determination of the optimal shell thickness for self-catalysed GaAs/AlGaAs core-shell nanowires
R. Songmuang, Le Thuy Thanh Giang, J. Bleuse M. Den Hertog +2
We present a set of experimental results identifying various effects that govern the carrier dynamics of self-catalyzed GaAs/AlGaAs core-shell nanowires (NWs) grown by molecular be…
Alloy inhomogeneity and carrier localization in AlGaN sections and AlGaN/AlN nanodisks in nanowires with 240-350 nm emission
C. Himwas, M. den Hertog, Le Si Dang +2
The Al-Ga intermixing at Al(Ga)N/GaN interfaces in nanowires and the chemical inhomogeneity in AlxGa1-xN/AlN nanodisks (NDs) are attributed to the strain relaxation process. This i…