251 citations · 449 across the 10 of their papers we have counts for
8 papers · 1 filter
Free carrier absorption in quantum cascade structures
F. Carosella, C. Ndebeka-Bandou, R. Ferreira +5
We show that the free carrier absorption in Quantum Cascade Lasers is very small and radically different from the classical Drude result on account of the orthogonality between the…
Simulation of Transport and Gain in Quantum Cascade Lasers
A. Wacker, S. -C. Lee, M. F. Pereira
Quantum cascade lasers can be modeled within a hierarchy of different approaches: Standard rate equations for the electron densities in the levels, semiclassical Boltzmann equation…
Nonequilibrium Green's function theory for transport and gain properties of quantum cascade structures
S. -C. Lee, A. Wacker
The transport and gain properties of quantum cascade (QC) structures are investigated using a nonequilibrium Green's function (NGF) theory which includes quantum effects beyond a B…
Dynamical bistability in quantum dot structures: The role of Auger processes
A. Rack, R. Wetzler, A. Wacker +1
Bistability in quantum dot structures is examined by a drift-diffusion model in combination with electron capture and emission processes. Our simulations provide a dynamic scenario…
Gain and Loss in Quantum Cascade Lasers
A. Wacker, S. -C. Lee
We report gain calculations for a quantum cascade laser using a fully self-consistent quantum mechanical approach based on the theory of nonequilibrium Green functions. Both the ab…
Quantum transport calculations for quantum cascade laser structures
S. C. Lee, A. Wacker
We apply a quantum transport theory based on nonequilibrium Green's functions to quantum cascade laser (QCL) structures, treating simultaneously the transmission through the inject…