390 citations · 473 across the 6 of their papers we have counts for
6 papers
Mid-infrared emission and absorption in strained and relaxed direct bandgap GeSn semiconductors
Simone Assali, Alain Dijkstra, Anis Attiaoui +3
By independently engineering strain and composition, this work demonstrates and investigates direct band gap emission in the mid-infrared range from GeSn layers grown on silicon. W…
Direct Bandgap Emission from Hexagonal Ge and SiGe Alloys
E. M. T. Fadaly, A. Dijkstra, J. R. Suckert +16
Silicon crystallized in the usual cubic (diamond) lattice structure has dominated the electronics industry for more than half a century. However, cubic silicon (Si), germanium (Ge)…
Anomalous exciton lifetime by an electromagnetic coupling of self-assembled quantum dots
E. W. Bogaart, J. E. M. Haverkort
We report on the experimental observation of a hitherto ignored long-range electromagnetic coupling between self-assembled quantum dots. A 12 times enhancement of the quantum dot e…
Observation of a Long-Range Interaction between Semiconductor Quantum Dots
E. W. Bogaart, J. E. M. Haverkort, R. Noetzel
We demonstrate electromagnetic interaction between distant quantum dots (QDs), as is observed from transient pump-probe differential reflectivity measurements. The QD-exciton lifet…
Differential reflection spectroscopy on InAs/GaAs quantum dots
E. W. Bogaart, J. E. M. Haverkort
In this report, we present the derivation of the differential reflection spectrum as has been reported in \emph{Phys. Rev. B} \textbf{72}, 195301 (2005).
All-optical switching due to state-filling in quantum dots
R. Prasanth, J. E. M. Haverkort, A. Deepthy +8
We report all-optical switching due to state-filling in quantum dots (QDs) within a Mach-Zehnder Interferometric (MZI) switch. The MZI was fabricated using InGaAsP/InP waveguides c…