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Wideband Calibration Methods on a Modified Vector Network Analyzer System
/forschung/publikationen/wideband-calibration-methods-on-a-modified-vector-network-analyzer-system-1
The increasing need for larger bandwidth to support faster transfer rates in modern telecommunication systems, like the introduction of the 5G cellular standard in 2019 and the ongoing research into…
GaAs Based Edge Emitters at 626 nm, 725 nm and 1180 nm
/forschung/publikationen/gaas-based-edge-emitters-at-626-nm-725-nm-and-1180-nm-1
GaAs-based semiconductor lasers with emission wavelengths around 626 nm, 725 nm and 1180 nm are challenging due to the necessary strain in the quantum well region. However, there is a…
Finite-Element Thermal Simulation of High-Power Diode Laser Stacks for High-Duty-Cycle Pump Applications
/forschung/publikationen/finite-element-thermal-simulation-of-high-power-diode-laser-stacks-for-high-duty-cycle-pump-applications-1
The two-dimensional heat distribution (steady-state and transient) within high-power diode laser stacks is simulated using a newly-developed model, based on finite element analysis and calibrated…
Power and Efficiency Scaling of GaAs-Based Edge-Emitting High-Power Diode Lasers
/forschung/publikationen/power-and-efficiency-scaling-of-gaas-based-edge-emitting-high-power-diode-lasers-1
Current progress in the scaling of continuous wave optical output power and conversion efficiency of broad-area GaAs based edge emitters, broad-area lasers (BALs), operating in the 900…1000 nm…
Ferdinand-Braun-Institut präsentiert Laser-Neuheiten auf der Photonics West 2025
/media-center/medienschau/ferdinand-braun-institut-praesentiert-laser-neuheiten-auf-der-photonics-west-2025
Das Berliner Institut entwickelt maßgeschneiderte Diodenlaser für den Einsatz in Industrie, Medizin und Quantentechnologien – vom Chip bis zum Prototyp. Auf der Photonics West 2025 in San Francisco…
FBH to present novel lasers at Photonics West
/media-center/medienschau/fbh-to-present-novel-lasers-at-photonics-west
At Photonics West 2025 in San Francisco (January 25-30, 2025), the Ferdinand-Braun-Institut (FBH) will be presenting novel and advanced diode lasers.
Investigating Transient Thermal Response of High-Power, High-Duty-Cycle Diode Laser Stacks using FEA-Based Simulation
/forschung/publikationen/investigating-transient-thermal-response-of-high-power-high-duty-cycle-diode-laser-stacks-using-fea-based-simulation
The transient heat distribution within high-power edge-cooled diode laser stacks under high-duty-cycle pulsed operation is simulated using finite element analysis. The impact of varying pulse…
Analyses of degradation mechanisms in single mode InGaN based laser diodes
/forschung/publikationen/analyses-of-degradation-mechanisms-in-single-mode-ingan-based-laser-diodes
We investigated fabrication aspects of InGaN based laser diodes, such as substrate type, activation of p-type conductivity and facet coating with respect to the device reliability. Material analyses…
Improved efficiency and beam divergence in kW-class diode laser bars with edge-heaters
/forschung/publikationen/improved-efficiency-and-beam-divergence-in-kw-class-diode-laser-bars-with-edge-heaters
We present a novel approach to flattening the in-chip thermal profile that develops within multiple-emitter, 1-cm-wide bars by optimally manipulating heating at the edge-emitters. The best-designed…
Bragg Gratings Reflectance Prediction with Coupled Mode Theory Fitted to 2D FDTD
/forschung/publikationen/bragg-gratings-reflectance-prediction-with-coupled-mode-theory-fitted-to-2d-fdtd
This study explores a surrogate model using coupled mode theory to predict the reflectivity spectrum of surface Bragg gratings. We use 2D FDTD simulations to build and validate the surrogate model.…