Search
Rules for the search
- Only words with 2 or more characters are accepted
- Max 200 chars total
- Space is used to split words, "" can be used to search for a whole string (not indexed search then)
- AND, OR and NOT are prefix words, overruling the default operator
- +/|/- equals AND, OR and NOT as operators.
- All search words are converted to lowercase
Kilowatt-class, High Duty Cycle, Passively Side-cooled 780 nm Diode Laser Stacks as Pumps for Pulsed MIR Lasers
/en/research/publications/kilowatt-class-high-duty-cycle-passively-side-cooled-780nbspnm-diode-laser-stacks-as-pumps-for-pulsed-mir-lasers
A 780nm diode laser pump source is presented that uses passive side-cooling to enable Kilowatt-class output at >10% duty cycle (10ms, 10Hz). Beam quality is M2<360 (BPP<90mm-mrad) and…
Narrow-band multiple-wavelengths DBR-ridge waveguide diode lasers customized for sensor applications
/en/research/publications/narrow-band-multiple-wavelengths-dbr-ridge-waveguide-diode-lasers-customized-for-sensor-applications
Monolithic narrow-band multi-wavelength stabilized diode lasers emitting between 760nm and 1064nm for direct sensor applications using Raman- or absorption spectroscopy, MIR upconverson imaging and…
Portable Shifted Excitation Raman Difference Spectroscopy - From Laboratory Investigations to in-situ Agri-Photonics
/en/research/publications/portable-shifted-excitation-raman-difference-spectroscopy-from-laboratory-investigations-to-in-situ-agri-photonics
Portable shifted excitation Raman difference spectroscopy (SERDS) will be presented using one-chip dual-wavelength Y-branch DBR diode laser at 785 nm as excitation source. Experimental results from…
Longitudinal Current Crowding as Power Limit in High Power 975 nm Diode Lasers
/en/research/publications/longitudinal-current-crowding-as-power-limit-in-high-power-975-nm-diode-lasers
Experiment and simulation of high power diode lasers reveals a longitudinally-varying current density profile, due to spatial hole-burning. Current crowding at the front facet increases with cavity…
A highly efficient GHz switching GaN-based synchronous buck converter module
/en/research/publications/a-highly-efficient-ghz-switching-gan-based-synchronous-buck-converter-module
The paper presents a highly efficient GaN-based synchronous buck converter suitable for switching in the lower GHz range. The module includes a very compact 2-stage GaN half-bridge converter MMIC…
Progress in GaAs-based Semiconductor Sources For High Brightness Beam-Combined Applications
/en/research/publications/progress-in-gaas-based-semiconductor-sources-for-high-brightness-beam-combined-applications
An overview is presented of studies at the FBH into GaAs-based semiconductor sources tailored for higher brightness in beam-combined applications, by making use of innovative device and packaging…
Non-uniform longitudinal current density induced power saturation in GaAs-based high power diode lasers
/en/research/publications/non-uniform-longitudinal-current-density-induced-power-saturation-in-gaas-based-high-power-diode-lasers
The output power of modern 975nm GaAs-based broad area diode lasers is limited by increasing carrier and photon losses at high bias. We use experiment and one-dimensional calculations on these…
Challenges to overcome breakdown limitations in lateral β-Ga2O3 MOSFET devices
/en/research/publications/challenges-to-overcome-breakdown-limitations-in-lateral-beta-ga2o3-mosfet-devices
In this work, the fabrication of high-performance metal-oxide-semiconductor field-effect transistors (MOSFETs) on Si-doped homoepitaxial layers on (100) Mg-doped semi-insulating β-Ga2O3…
Wide Field Spectral Imaging with Shifted Excitation Raman Difference Spectroscopy Using the Nod and Shuffle Technique
/en/research/publications/wide-field-spectral-imaging-with-shifted-excitation-raman-difference-spectroscopy-using-the-nod-and-shuffle-technique
Wide field Raman imaging using the integral field spectroscopy approach was used as a fast, one shot imaging method for the simultaneous collection of all spectra composing a Raman image. For the…
Mode competition in broad-ridge-waveguide lasers
/en/research/publications/mode-competition-in-broad-ridge-waveguide-lasers
The lateral brightness achievable with high-power GaAs-based laser diodes having long and broad waveguides is commonly regarded to be limited by the onset of higher-order lateral modes. For the study…