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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…
Smart laser system for atom interferometer-based quantum sensors
/forschung/forschungsnews/smart-laser-system-for-atom-interferometer-based-quantum-sensors
A novel Bragg grating-based frequency reference module complements our latest generation of laser modules. It facilitates accurate frequency control. Autonomous operation of the combined laser system…
Precision engineering of the thermal profile in high-power broad-area lasers: an innovative approach for brightness scaling
/forschung/forschungsnews/precision-engineering-of-the-thermal-profile-in-high-power-broad-area-lasers-an-innovative-approach-for-brightness-scaling
FBH researchers developed an effective technique to manipulate temperature distribution within broad emitters. It has been shown that a well-defined emitter sub-structure can flatten the adverse…