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DFB Laser Diodes Based on GaN Using 10th Order Laterally Coupled Surface Gratings
/forschung/publikationen/dfb-laser-diodes-based-on-gan-using-10th-order-laterally-coupled-surface-gratings
Single longitudinal mode emission of laterally coupled distributed-feedback (LC-DFB) laser diodes (LDs) based on InGaN/GaN multiquantum-well structures containing 10th-order surface Bragg gratings…
Compact Deep UV System at 222.5 nm Based on Frequency Doubling of GaN Laser Diode Emission
/forschung/publikationen/compact-deep-uv-system-at-2225-nm-based-on-frequency-doubling-of-gan-laser-diode-emission
Laser light sources emitting in the deep ultraviolet wavelength range between 210 and 230 nm are of great interest for spectroscopic applications. Here, a compact DUV diode laser system emitting…
Quantum Technology: Quantum sensing is gaining (s)pace
/forschung/publikationen/quantum-technology-quantum-sensing-is-gaining-space
Quantum technologies such as encryption or quantum computing attract the most attention, but quantum sensing may reach industry first. For example, a Berlin collaboration is miniaturizing laser…
Intensity Noise Transfer Through a Diode-Pumped Titanium Sapphire Laser System
/forschung/publikationen/intensity-noise-transfer-through-a-diode-pumped-titanium-sapphire-laser-system
In this paper, we investigate the noise performance and transfer in a titanium sapphire (Ti:S) laser system. This system consists of a distributed Bragg-reflector tapered diode laser, which is…
Suppressed power saturation due to optimized optical confinement in 9xx nm high-power diode lasers that use extreme double asymmetric vertical designs
/forschung/publikationen/suppressed-power-saturation-due-to-optimized-optical-confinement-in-9xx-nm-high-power-diode-lasers-that-use-extreme-double-asymmetric-vertical-designs
Broad area lasers with novel extreme double asymmetric structure (EDAS) vertical designs featuring increased optical confinement in the quantum well, Γ, are shown to have improved temperature…
Imaging and Spectroscopic Sensing with Low-Repetition-Rate Terahertz Pulses and GaN TeraFET Detectors
/forschung/publikationen/imaging-and-spectroscopic-sensing-with-low-repetition-rate-terahertz-pulses-and-gan-terafet-detectors
Aiming for non-destructive testing and security applications, we investigate transmission-mode imaging and spectroscopic sensing using terahertz (THz) pulses from a commercial optical parametric…
Influence of nonlinear effects on the characteristics of pulsed high-power broad-area distributed Bragg reflector lasers
/forschung/publikationen/influence-of-nonlinear-effects-on-the-characteristics-of-pulsed-high-power-broad-area-distributed-bragg-reflector-lasers
We theoretically analyze the influence of nonlinear effects such as spatial holeburning, two-photon absorption and gain compression on the power-current and beam characteristics of a high-power…
High-Efficiency Broad-Ridge Waveguide Lasers
/forschung/publikationen/high-efficiency-broad-ridge-waveguide-lasers
Highly efficient single-spatial mode lasers with watt-level output power in the 9xx-nm wavelength range are of great interest for a variety of applications. We experimentally investigate the…
Thermocompression bonding for high-power-UV LEDs
/forschung/publikationen/thermocompression-bonding-for-high-power-uv-leds
Thermocompression bonding for high-power-UV LEDs I. Kaepplingera, D. Karolewskia, G. Brockmanna, T. Ortleppa, O. Brodersena, A. Thiesb, J. Rassb,…
Defect-generation and diffusion in (In)AlGaN-based UV-B LEDs submitted to constant current stress
/forschung/publikationen/defect-generation-and-diffusion-in-inalgan-based-uv-b-leds-submitted-to-constant-current-stress
Defect-generation and diffusion in (In)AlGaN-based UV-B LEDs submitted to constant current stress D. Montia, M. Meneghinia, C. De Santia,b, S. Da Ruosa,…