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Increased slow-axis beam quality in 9xx nm high power broad area diode lasers by modifying the lateral current profile at the device edges
/forschung/publikationen/increased-slow-axis-beam-quality-in-9xx-nm-high-power-broad-area-diode-lasers-by-modifying-the-lateral-current-profile-at-the-device-edges
Improved radiance is achieved in 9xx-nm broad area lasers by suppressing lateral current spreading using deep proton-bombardment. Beam parameter product at 7W output was reduced by 20% to 2.1mm-mrad.…
Quantitative analysis of the output power and linewidth of blue light laser sources for future holographic display applications
/forschung/publikationen/quantitative-analysis-of-the-output-power-and-linewidth-of-blue-light-laser-sources-for-future-holographic-display-applications
We present detailed experimental analysis of different implementations of blue light laser sources for future holographic display applications. This includes an analysis of the optical output power,…
Comparison of AlGaInP red-emitting tapered amplifiers with and without ridge waveguide section
/forschung/publikationen/comparison-of-algainp-red-emitting-tapered-amplifiers-with-and-without-ridge-waveguide-section
We compared tapered amplifier with (TPA) and without (TTA) ridge wavguide sections emitting near 647 nm, and achieve about 470 mW and 700 mW with a TPA and a TTA, respectively.
Micro-Integrated, Narrow Linewidth Master Oscillator Power Amplifier Designed for Quantum Sensors in Space
/forschung/publikationen/micro-integrated-narrow-linewidth-master-oscillator-power-amplifier-designed-for-quantum-sensors-in-space
We developed a narrow linewidth DFB-Master Oscillator Power Amplifier module for the deployment of cold atom based quantum sensors in space. The micro optical benches not larger than 80x25mm2 passed…
Narrowband GaN external cavity diode laser with 400 mW output power at 445 nm for deep ultraviolet frequency doubling
/forschung/publikationen/narrowband-gan-external-cavity-diode-laser-with-400-mw-output-power-at-445-nm-for-deep-ultraviolet-frequency-doubling
We present a GaN external cavity diode laser system with 400 mW optical power and an emission width of 20 pm at 445 nm suitable for frequency conversion into the UV spectral range.
Nanosecond high-current pulsed operation of ridge-waveguide lasers
/forschung/publikationen/nanosecond-high-current-pulsed-operation-of-ridge-waveguide-lasers
Extremely strong ns-pulses are generated with 808nm ridge-waveguide lasers. Unusual post-pulse reverse currents are revealed under excitation beyond 10A. They are attributed to the reflow of excess…
Coexistence of Multiple Stable Continuous-Wave States in Micro-Integrated External-Cavity Diode Lasers
/forschung/publikationen/coexistence-of-multiple-stable-continuous-wave-states-in-micro-integrated-external-cavity-diode-lasers
We investigate dynamics of external cavity diode lasers. We present a theoretical and experimental evidence of the coexisting stable stationary states and discuss the recommendations for…
Generation of 0.7 W second harmonic picosecond pulses near 560 nm using a DBR diode laser and a ridge-waveguide PPLN crystal
/forschung/publikationen/generation-of-07-w-second-harmonic-picosecond-pulses-near-560-nm-using-a-dbr-diode-laser-and-a-ridge-waveguide-ppln-crystal
Picosecond laser pulses near 1120nm from a DBR diode laser are frequency doubled in a ridge-waveguide crystal. The 558nm pulses reach a pulse power of 0.7W and show very good pulse and beam…
GaAs-based Phase Modulator for Laser Radiation at 1070 nm
/forschung/publikationen/gaas-based-phase-modulator-for-laser-radiation-at-1070-nm
We report the design and fabrication of a double heterostructure GaAs/AlGaAs ridge waveguide electro-optic phase modulator for frequency stabilization of a 1070 nm laser. The measured modulation…
Development of high-power diode lasers with beam parameter product below 2 mm×mrad within the BRIDLE project
/forschung/publikationen/development-of-high-power-diode-lasers-with-beam-parameter-product-below-2-mmxmrad-within-the-bridle-project
High power broad-area diode lasers are the most efficient source of optical energy, but cannot directly address many applications due to their high lateral beam parameter product BPP = 0.25 × ΘL95%x…