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Widely tunable Watt-level MOPA systems emitting at 976 nm
/forschung/publikationen/widely-tunable-watt-level-mopa-systems-emitting-at-976-nm
Tunable diode laser sources are key components in absorption spectroscopy, biomedical imaging and in optical telecommunication systems, to mention a few examples. The term tunable refers here to…
Determination of the Residual Amplified Spontaneous Emission in Single-Mode Semiconductor Optical Amplifiers
/forschung/publikationen/determination-of-the-residual-amplified-spontaneous-emission-in-single-mode-semiconductor-optical-amplifiers
The Master-Oscillator-Power-Amplifier (MOPA) is a laser light source best suited to provide high power, stable frequency, and narrow linewidth emission [1]. In state-of-the-art MOPA systems,…
Monolithic master oscillator with tapered power amplifier diode laser at 1060 nm with additional control section for high power operation
/forschung/publikationen/monolithic-master-oscillator-with-tapered-power-amplifier-diode-laser-at-1060-nm-with-additional-control-section-for-high-power-operation
State of the art diode laser light sources for high power operation with good beam quality are distributed Bragg reflector tapered diode lasers (DBR-TPLs). These devices deliver over 10 W of…
Efficient Tm:YAG and Tm:LuAG lasers pumped by red tapered diodes
/forschung/publikationen/efficient-tmyag-and-tmluag-lasers-pumped-by-red-tapered-diodes
Eye-safe, diode-pumped all-solid-state lasers working in the 2 µm region are favourable for many applications including remote sensing, medicine, and gas sensing. Tm-doped crystals such as…
Towards a Strontium Beam Optical Reference Based on the 1S0 → 3P1 Intercombination Line on a Sounding Rocket
/forschung/publikationen/towards-a-strontium-beam-optical-reference-based-on-the-1s0nbsprarrnbsp3p1-intercombination-line-on-a-sounding-rocket
Within the OPUS collaboration, we develop optical frequency references based on spectroscopy of the 1S0 → 3P1 intercombination line of 88Sr at 689 nm in thermal and laser-cooled…
Simulation and design of a compact GaAs based tunable dual-wavelength diode laser system
/forschung/publikationen/simulation-and-design-of-a-compact-gaas-based-tunable-dual-wavelength-diode-laser-system
We present our design of a compact, integrated and tunable dual-wavelength diode laser system emitting around 785 nm, which is of interest for several applications like Raman spectroscopy and…
TeraFET multi-pixel THz array for a confocal imaging system
/forschung/publikationen/terafet-multi-pixel-thz-array-for-a-confocal-imaging-system
We present a THz detector based on AlGaN/GaN HEMT technology implemented for a multi-pixel array and tested in a confocal THz imaging system. The multi-pixel array shows good homogeneity where the…
Sub-THz components for high capacity point to multipoint wireless networks
/forschung/publikationen/sub-thz-components-for-high-capacity-point-to-multipoint-wireless-networks
The first point to multipoint wireless system at D-band (141 - 148.5 GHz), providing high capacity area sectors fed by high data rate G-band (275 - 305 GHz) links connected to fiber access…
A 240 GHz Active Multiplier-Based Signal Source for Millimeter-Wave/Terahertz Applications
/forschung/publikationen/a-240-ghz-active-multiplier-based-signal-source-for-millimeter-waveterahertz-applications
This paper presents a 240 GHz signal source using a 0.8 µm transferred substrate (TS) InP-HBT technology. The source is based on an active tripler and delivers -3 dBm peak output…
The scanning electron microscope as a flexible tool for investigating the properties of UV-emitting nitride semiconductor thin films
/forschung/publikationen/the-scanning-electron-microscope-as-a-flexible-tool-for-investigating-the-properties-of-uv-emitting-nitride-semiconductor-thin-films
In this paper we describe the scanning electron microscopy techniques of electron backscatter diffraction, electron channeling contrast imaging, wavelength dispersive X-ray spectroscopy, and…