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Article
Design of nonlinearity-enhanced quantum-cascade lasers
We present simulations of mid-infrared quantum-cascade lasers (QCL) with optimized second-harmonic generation (SHG). The optimized design was obtained utilizing techniques from supersymmetric quantum mechanics...
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Chapter and Conference Paper
Coherent Control and Nonlinear Interactions of Semiconductor Cavity Polaritons
We demonstrate coherent control of the cavity-polaritons of a quantum-well semiconductor microcavity in a two-color scheme. Evidence for a coherent two-photon biexciton transition and excitation induced dephas...
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Chapter
Terahertz-Control of Charge-Carrier Wavepackets in Semiconductor Quantum Wells
With the advancement of free-electron lasers [FEL’s] as well as THz solid-state emitters [1], THz physics and related technology is currently coming out of its infancy. Two-color techniques (optical and THz) a...
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Chapter
Optical Cross-Talk between Quantum Wells
In recent years, the dynamics of excitons in quantum wells (QWs) has attracted much attention especially under resonant excitation. Many time-resolved photolumines-cence experiments have been performed to stud...
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Chapter and Conference Paper
Coherence Transfer in Exciton-Exciton Scattering in a Semiconductor Microcavity
We describe recent evidence which indicates how scattering of weakly localized exciton-polaritons gives rise to normally-directed coherent emission from an obliquely excited planar microcavity.
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Chapter
Excitonic Radiative Dynamics in Semiconductor Quantum Wells
The fabrication of quantum-well (QW) structures has allowed unprecidented flexibility to engineer the electronic and optical properties of materials. These technologies are widely exploited in devices. The per...