78 citations · 172 across the 5 of their papers we have counts for
5 papers
Efficient electronic structure calculations for extended systems of coupled quantum dots using a linear combination of quantum dot orbitals method
Alexander Mittelstädt, Ludwig A. Th. Greif, Stefan T. Jagsch +1
We present a novel "linear combination of atomic orbitals"-type of approximation, enabling accurate electronic structure calculations for systems of up to 20 or more electronically…
Terahertz Lasing at Roomtemperature: Numerical Study of a Vertical-Emitting Quantum Cascade Laser Based on a Quantum Dot Superlattice
Alexander Mittelstädt, Ludwig A. Th. Greif, Stefan T. Jagsch +1
We investigate room temperature lasing of terahertz quantum cascade lasers using quantum dot chains as active material suitable for wireless communication and imaging technologies.…
Ground State Resonant Two-Photon Transitions in Wurtzite GaN/AlN Quantum Dots
Stefan Thomas Jagsch, Ludwig Albrecht Thorsten Greif, Stephan Reitzenstein +1
Two-photon transition rates are investigated in resonance to the ground state in wurtzite GaN/AlN quantum dots. The ground state transition is two-photon allowed because of the ele…
On thresholdless lasing features in high- nitride nanobeam cavities: a quantum optical study
Stefan T. Jagsch, Noelia Vico Triviño, Frederik Lohof +11
Exploring the limits of spontaneous emission coupling is not only one of the central goals in the development of nanolasers, it is also highly relevant regarding future large-scale…
p-State Luminescence in CdSe Nanoplatelets: The Role of Lateral Confinement and an LO Phonon Bottleneck
Alexander W. Achtstein, Riccardo Scott, Sebastian Kickhöfel +8
We report excited state emission from p-states at excitation fluences well below ground state saturation in CdSe nanoplatelets. Size dependent exciton ground state-excited state en…