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Search results 1701 until 1710 of 4091

Extensive study of magneto-optical and optical properties of Cd1−xMnxTe between 675 and 1025 nm

/en/research/publications/extensive-study-of-magneto-optical-and-optical-properties-of-cd1xmnxte-between-675-and-1025-nm-1

We determine Faraday rotations and measure the optical reflection and transmission from magneto-optical Cd1−xMnxTe crystals with various stoichiometric ratios. For wavelengths between 675 and…

Switchable thermal waveguides in GaAs based devices

/en/research/publications/switchable-thermal-waveguides-in-gaas-based-devices

The modulation of light within microscopic devices is the key to designing versatile and powerful photonic integrated circuits (PICs). Contemporary techniques are able to generate a wide range of…

Picosecond pulses with 40 W peak power from a passively mode-locked tapered quantum well laser

/en/research/publications/picosecond-pulses-with-40-w-peak-power-from-a-passively-mode-locked-tapered-quantum-well-laser

In this letter, the authors present a monolithic edge emitting diode laser intended as a potential key component for the generation of terahertz radiation in a compact time-domain spectroscopy…

Impact of the capture time on power saturation of quantum-well diode lasers

/en/research/publications/impact-of-the-capture-time-on-power-saturation-of-quantum-well-diode-lasers

Injected electrons and holes are captured into quantum wells with a non-vanishing time. Simulation results are presented, showing that this results in a non-equilibrium of free and bound carriers in…

Simulation and analysis of high‑brightness tapered ridge‑waveguide lasers

/en/research/publications/simulation-and-analysis-of-high-brightness-tapered-ridge-waveguide-lasers-1

In this work, a simulation-based analysis of a CW-driven tapered ridge-waveguide laser design is presented. Measurements of these devices delivered high lateral brightness values of…

Optimization of Vertical GaN Drift Region Layers for Avalanche and Punch-Through Pn-Diodes

/en/research/publications/optimization-of-vertical-gan-drift-region-layers-for-avalanche-and-punch-through-pn-diodes

We optimized gallium nitride drift layers for high voltage and low resistance vertical electronic devices by tuning the doping concentration for a given thickness of 5 µm. The optimization…

Polymer surface functionalization using a new µ-wave driven atmospheric pressure plasma-jet device

/en/research/publications/polymer-surface-functionalization-using-a-new-micro-wave-driven-atmospheric-pressure-plasma-jet-device

A newly developed compact µ-wave plasma source was utilized for activating the surfaces of several polymers. A remarkable improvement of the surface adhesion was achieved. The plasma-treated surfaces…

Atomistic Simulations of Defects Production under Ion Irradiation in Epitaxial Graphene on SiC

/en/research/publications/atomistic-simulations-of-defects-production-under-ion-irradiation-in-epitaxial-graphene-on-sic

Using first-principles and analytical potential atomistic simulations, production of defects in epitaxial graphene (EG) on SiC upon ion irradiation for ion types and energies accessible in helium-ion…

Lateral Transistors on β-Ga2O3: Overview on Design, Technology, and Characterization

/en/research/publications/lateral-transistors-on-beta-ga2o3-overview-on-design-technology-and-characterization

This chapter reviews recent advances in the fabrication of lateral ß-Ga2O3 power transistors for high-voltage switching applications. In this regard, certain aspects in the design principles and…

Spatially resolved degradation effects in UVB LEDs stressed by constant current operation

/en/research/publications/spatially-resolved-degradation-effects-in-uvb-leds-stressed-by-constant-current-operation

InAlGaN-based UVB light-emitting diodes with an emission wavelength of 310 nm were operated at an elevated nominal current density of 200 A/cm2 and a heatsink temperature of 29°C. The…