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10 A/950 V switching of GaN-channel HFETs with non-doped AlN buffer
/forschung/publikationen/10-a950-v-switching-of-gan-channel-hfets-with-non-doped-aln-buffer
AlN-based semiconductor devices are considered to outperform lateral AlGaN/GaN HFETs for power-electronic switching applications due to the high AlN-material breakdown field strength. We present an…
Shifted Excitation Raman Difference Spectroscopy Combined with Wide Area Illumination and Sample Rotation for Wood Species Classification
/forschung/publikationen/shifted-excitation-raman-difference-spectroscopy-combined-with-wide-area-illumination-and-sample-rotation-for-wood-species-classification
Raman spectroscopy has found its way into a wide range of applications and is successfully applied for qualitative and quantitative studies. Despite significant technical progress over the last few…
10 kHz Shifted-Excitation Raman Difference Spectroscopy with Charge-Shifting Charge-Coupled Device Read-Out for Effective Mitigation of Dynamic Interfering Backgrounds
/forschung/publikationen/10khz-shifted-excitation-raman-difference-spectroscopy-with-charge-shifting-charge-coupled-device-read-out-for-effective-mitigation-of-dynamic-interfering-backgrounds
In this work we demonstrate an advanced concept of a charge-shifting charge-coupled device (CCD) read-out combined with shifted excitation Raman difference spectroscopy (SERDS) capable of operating…
Enhanced light extraction efficiency of far-ultraviolet-C LEDs by micro-LED array design
/forschung/publikationen/enhanced-light-extraction-efficiency-of-far-ultraviolet-c-leds-by-micro-led-array-design
AlGaN-based far-UVC light emitting diodes (LEDs) with an emission wavelength of 233 nm were fabricated in the form of micro-LED arrays with emitter diameters ranging from 1.5 to 50 µm. The…
Experimental and theoretical studies into longitudinal spatial hole burning as a power limit in high-power diode lasers at 975 nm
/forschung/publikationen/experimental-and-theoretical-studies-into-longitudinal-spatial-hole-burning-as-a-power-limit-in-high-power-diode-lasers-at-975-nm
Spatial-hole-burning as a limit to the continuous-wave (CW) output power of GaAs-based diode lasers is experimentally studied. For 90 µm stripe lasers with 6 mm resonator length and 0.8%…
Ge-ion implantation and activation in (100) β-Ga2O3 for ohmic contact improvement using pulsed rapid thermal annealing
/forschung/publikationen/ge-ion-implantation-and-activation-in-100-beta-ga2o3-for-ohmic-contact-improvement-using-pulsed-rapid-thermal-annealing
In this work, we analyze the optimum annealing conditions for the activation of Ge-implanted β-Ga2O3 in order to reach low ohmic contact resistances. The experiments involved the use of a pulsed…
A comparison of consistent UV treatment versus inconsistent UV treatment in horticultural production of lettuce
/forschung/publikationen/a-comparison-of-consistent-uv-treatment-versus-inconsistent-uv-treatment-in-horticultural-production-of-lettuce
UV radiation is an underrated radiation currently missing in many horticultural production systems of vegetables in protected cultivation. It can be added e.g., in LED light sources. Using lettuce as…
Quantum Control and Coherence of Orbital Levels of a Tin-Vacancy Color Center in a Diamond Nanopillar
/forschung/publikationen/quantum-control-and-coherence-of-orbital-levels-of-a-tin-vacancy-color-center-in-a-diamond-nanopillar
Cold atomic quantum sensors rely on the generation, manipulation, and detection of atomic quantum gases and are well proven within laboratory environments. For many applications in the areas of…
Miniaturized crossed beam optical dipole trap for compact atom-based quantum sensors
/forschung/publikationen/miniaturized-crossed-beam-optical-dipole-trap-for-compact-atom-based-quantum-sensors
Cold atomic quantum sensors rely on the generation, manipulation, and detection of atomic quantum gases and are well proven within laboratory environments. For many applications in the areas of…
Diamond "Sawfish" photonic crystal cavities
/forschung/publikationen/diamond-quotsawfishquot-photonic-crystal-cavities
Diamond is host to color centers, an interesting type of quantum system. Examples are the well-studied nitrogen-vacancy center and more recent the group-IV color centers. These systems show promising…