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Spectral broadening of mode-locked semiconductor lasers by resonator-internal pulse shaping
/forschung/publikationen/spectral-broadening-of-mode-locked-semiconductor-lasers-by-resonator-internal-pulse-shaping
In a modelocked semiconductor laser, resonator-internal phase- and amplitude filters are optimized for maximum spectral bandwidth using an evolutionary algorithm. Modes of operation of the laser…
Controllable dual-wavelength-stabilized Y-branch DBR diode lasers at 785 nm for shifted excitation Raman difference spectroscopy
/forschung/publikationen/controllable-dual-wavelength-stabilized-y-branch-dbr-diode-lasers-at-785-nm-for-shifted-excitation-raman-difference-spectroscopy
In this contribution controllable dual-wavelength-stabilized Y-branch DBR diode lasers at 785 nm with an output power of 215 mW and a side-mode-suppression-ratio better 50 dB suitable for shifted…
Array with 24 distributed Bragg reflector lasers for scanning applications: fabrication and characterisation
/forschung/publikationen/array-with-24-distributed-bragg-reflector-lasers-for-scanning-applications-fabrication-and-characterisation
We present a diode laser array with small footprint incorporating 24 individually addressable ridge waveguide DBR lasers. For wavelengths stabilisation around 905 nm we apply 3rd order E-beam defined…
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…