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High-Power Tensile-Strained GaAsP-AlGaAs Quantum-Well Lasers Emitting between 715 and 790 nm
/forschung/publikationen/high-power-tensile-strained-gaasp-algaas-quantum-well-lasers-emitting-between-715-and-790-nm
Tensile-strained GaAsP quantum wells embedded in AlGaAs large optical cavity structures were studied. In the wavelength range between 715 and 790 nm, very high output power and excellent conversion…
High-power and high temperature long-term stability of Al-free 950 nm laser structures on GaAs
/forschung/publikationen/high-power-and-high-temperature-long-term-stability-of-al-free-950-nm-laser-structures-on-gaas
Al-free InGaAs/InGaAsP/InGaP broad area lasers emitting at 950nm show low degradation rates below 6x10-5/h, under conditions of 1.5W emission power per 100 µm stripe width at 50°C and…
Publikationen
/forschung/publikationen/influence-of-2-ghz-harmonic-load-pull-on-hbt-and-mesfet-output-power-and-efficiency
Publikationen
/forschung/publikationen/experimental-evaluation-of-microwave-field-effect-transistor-noise-models
Improved Numerical Methods for the Simulation of Microwave Circuits
/forschung/publikationen/improved-numerical-methods-for-the-simulation-of-microwave-circuits
The scattering matrix describes monolithic microwave intergrated circuits that are connected to transmission lines in terms of their wave value modes. Using a finite-volume method the correspomding…
Efficient FD formulation for lossy waveguide analysis based on quasistatic field characteristics
/forschung/publikationen/efficient-fd-formulation-for-lossy-waveguide-analysis-based-on-quasistatic-field-characteristics
This letter treats the finite-difference (FD) analysis of transmission lines including metallic loss. Computational costs are reduced drastically by incorporating correction factors into the FD…
FDTD accuracy improvement by incorporation of 3D edge singularities
/forschung/publikationen/fdtd-accuracy-improvement-by-incorporation-of-3d-edge-singularities
The finite-difference approximation resolves the electromagnetic field near singularities at metallic edges with only poor accuracy. However, if the singular field behavior is known, it can be…
Optimization of flip-chip interconnects for millimeter-wave frequencies
/forschung/publikationen/optimization-of-flip-chip-interconnects-for-millimeter-wave-frequencies
The mm-wave performance of flip-chip interconnects in coplanar environment is investigated. By means of electromagnetic simulation, different possibilities to improve return loss are presented and…