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New Leibniz-funded project aims at lasers with very high output powers in a narrow beam
/forschung/forschungsnews/new-leibniz-funded-project-aims-at-lasers-with-very-high-output-powers-in-a-narrow-beam
FBH and their partners will start work in 2023 on project PCSELence "Excellence in Photonic Crystal Surface Emitting Lasers” as part of the Leibniz Association’s “Cooperative Excellence” program. The…
New Focused Ion Beam System for Device Characterization and Rapid Prototyping
/forschung/forschungsnews/new-focused-ion-beam-system-for-device-characterization-and-rapid-prototyping
FBH recently installed a Helios 5 UX dual beam system that combines a focused gallium ion beam with a scanning electron microscope. The instrument will be used for microscopic analysis of…
Compact single-stage 90 GHz power amplifier for terahertz applications
/forschung/forschungsnews/compact-single-stage-90-ghz-power-amplifier-for-terahertz-applications
We have realized a compact power amplifier using our InP MMIC process, achieving a maximum output power of 12.5 dBm with 17% efficiency. The circuit is equipped with low-temperature indium bumps…
Shifted excitation Raman difference spectroscopy identifies soil minerals and predicts soil carbonate content
/forschung/forschungsnews/shifted-excitation-raman-difference-spectroscopy-identifies-soil-minerals-and-predicts-soil-carbonate-content
SERDS using 785 nm dual-wavelength diode lasers is a powerful technique for soil inspection under the influence of strong fluorescence interference. This could help to improve crop productivity…
Picosecond pulses with 40 W peak power from a tapered laser diode for THz application
/forschung/forschungsnews/picosecond-pulses-with-40-w-peak-power-from-a-tapered-laser-diode-for-thz-application
FBH scientists have developed a monolithic double quantum well laser featuring a tapered gain section for ultrashort pulse generation. The generated picosecond pulses with high peak power can be…
A unique tool for sputtered iridium gate technology
/forschung/forschungsnews/a-unique-tool-for-sputtered-iridium-gate-technology
Recently, FBH started operating a new sputter tool based on the principle of a quasi-vertical deposition process. The tool concept ensures a cross-contamination free process and is used to deposit…
Nanofabrication of suspended photonic crystal cavities in diamond
/forschung/forschungsnews/nanofabrication-of-suspended-photonic-crystal-cavities-in-diamond
We have successfully fabricated a novel type of suspended photonic crystal cavities in diamond by implementing a quasi-isotropic dry etching process in O2-plasma. These devices are key components for…
A 4 GHz digital class-E outphasing PA for highly efficient 5G base stations
/forschung/forschungsnews/a-4-ghz-digital-class-e-outphasing-pa-for-highly-efficient-5g-base-stations
FBH has realized the first GaN-based digital class-E outphasing power amplifier module for 5G applications. The design concept is an important step to push efficiency of 5G base stations and to…
DBR tapered laser at 660 nm as miniaturized pump source for quantum optical coherence tomography
/forschung/forschungsnews/dbr-tapered-laser-at-660-nm-as-miniaturized-pump-source-for-quantum-optical-coherence-tomography
The FBH has developed a red-emitting DBR tapered laser at a wavelength of 660 nm. With an almost single-mode emission and more than 1 W optical output power, this laser is suitable to…
A new route to lattice-matched base layers for UV LEDs – the role of oxygen in high-temperature annealing of AlGaN
/forschung/forschungsnews/a-new-route-to-lattice-matched-base-layers-for-uv-leds-the-role-of-oxygen-in-high-temperature-annealing-of-algan
Improved material quality of aluminum gallium nitride (AlGaN) was achieved by high-temperature annealing using a sapphire (Al2O3) cover to protect the surface. Oxygen helps to maintain optical…