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Search results 1471 until 1480 of 4021

Light extraction efficiency and internal quantum efficiency of fully UVC-transparent AlGaN based LEDs

/en/research/publications/light-extraction-efficiency-and-internal-quantum-efficiency-of-fully-uvc-transparent-algan-based-leds

The light extraction efficiency (LEE), external quantum efficiency (EQE), and current-voltage characteristics of deep ultraviolet light emitting diodes (DUV-LEDs) with different aluminum mole…

Direct observation of resonant tunneling in heterostructure with a single quantum well

/en/research/publications/direct-observation-of-resonant-tunneling-in-heterostructure-with-a-single-quantum-well

A resonant-tunneling conductivity was experimentally registered in a doped heterostructure with a single quantum well using admittance spectroscopy. Earlier, this effect was only realized in…

A carbon-doping related luminescence band in GaN revealed by below bandgap excitation

/en/research/publications/a-carbon-doping-related-luminescence-band-in-gan-revealed-by-below-bandgap-excitation

Carbon doped GaN grown by hydride vapor phase epitaxy was investigated by photoluminescence and photoluminescence excitation spectroscopy covering a broad range of carbon concentrations. Above…

Toward the first D-band Point to multipoint wireless system field test

/en/research/publications/toward-the-first-d-band-point-to-multipoint-wireless-system-field-test

The European Commission Horizon 2020 ULTRAWAVE "Ultra capacity wireless layer beyond 100 GHz based on millimeter waves" is in the final stage of development. The first ever field test…

A Digital Correction Method for Increased Dynamic Range in Interferometric Six-Port Radars

/en/research/publications/a-digital-correction-method-for-increased-dynamic-range-in-interferometric-six-port-radars

In this letter, we demonstrate a digital correction method for extending the dynamic range of a six-port radar system based on detector diodes. An individual diode gain is considered to depend on…

Shifted excitation Raman difference spectroscopy as enabling technique for the analysis of animal feedstuff

/en/research/publications/shifted-excitation-raman-difference-spectroscopy-as-enabling-technique-for-the-analysis-of-animal-feedstuff

To achieve the best performance and health in farm animals, high-quality pellets should be applied for feeding. Raw materials used for pellet production can have a significant influence on the…

Modelling of a miniature microwave driven nitrogen plasma jet and comparison to measurements

/en/research/publications/modelling-of-a-miniature-microwave-driven-nitrogen-plasma-jet-and-comparison-to-measurements

The MMWICP (miniature microwave ICP) is a new plasma source using the induction principle. Recently Klute et al presented a mathematical model for the electromagnetic fields and power balance of the…

Pulsed Diode Laser Minibars for Pumping Space-Borne Solid-State Lasers

/en/research/publications/pulsed-diode-laser-minibars-for-pumping-space-borne-solid-state-lasers

Laser diode benches (LDBs) with lasing wavelength of 808 nm were developed, manufactured and endurance-tested for utilization as pump lasers for the Nd:YAG oscillator in the climate satellite…

Time-domain optics for atomic quantum matter

/en/research/publications/time-domain-optics-for-atomic-quantum-matter

We investigate time-domain optics for atomic quantum matter. Within a matter-wave analog of the thin-lens formalism, we study optical lenses of different shapes and refractive powers to precisely…

16.3 W Peak-Power Pulsed All-Diode Laser Based Multi-Wavelength Master-Oscillator Power-Amplifier System at 964 nm

/en/research/publications/163-w-peak-power-pulsed-all-diode-laser-based-multi-wavelength-master-oscillator-power-amplifier-system-at-964-nm

An all-diode laser-based master oscillator power amplifier (MOPA) configuration for the generation of ns-pulses with high peak power, stable wavelength and small spectral line width is presented. The…