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1.38 W Tunable High-Power Narrow-Linewidth External-Cavity Tapered Amplifier at 670 nm
/forschung/publikationen/138-w-tunable-high-power-narrow-linewidth-external-cavity-tapered-amplifier-at-670nbspnm
A diffraction-limited narrow-linewidth diode laser system based on a tapered amplifier in external cavity is demonstrated. 1.38 W output power is obtained. The laser system is tunable from 659…
First SESAM-modelocked Yb:KGW femtosecond oscillator operating at 1 GHz repetition rate
/forschung/publikationen/first-sesam-modelocked-ybkgw-femtosecond-oscillator-operating-at-1-ghz-repetition-rate
We present the first femtosecond SESAM-modelocked Yb:KGW laser operating at 1 GHz repetition rate. We generated 120 mW output power in 317-fs pulses at 1.7-W pump power from a…
Second Harmonic Generation of Picosecond Pulses at 530 nm in Bulk PPLN at Variable Repetition Rates
/forschung/publikationen/second-harmonic-generation-of-picosecond-pulses-at-530nbspnm-in-bulk-ppln-at-variable-repetition-rates
Green picosecond pulses with peak powers of more than 4W are generated by second harmonic generation in bulk PPLN. These power levels exceed all previous electrically triggerable green picosecond…
Narrow Linewidth DBR-RWLasers emitting near 1064 nm
/forschung/publikationen/narrow-linewidth-dbr-rwlasers-emitting-near-1064nbspnm
We report on the realization of narrow linewidth high power distributed bragg reflector (DBR) lasers. For devices with a front facet reflectivity Rf = 30% we obtain a minmum intrinsic linewidth of…
Sub-50 fs Diode-Pumped Yb:YCOB Laser
/forschung/publikationen/sub-50nbspfs-diode-pumped-ybycob-laser
Passive mode locking of the self-frequency doubling Yb:Ca4YO(BO3)3 pumped by a two-section distributed Bragg-reflector tapered-diode-laser is demonstrated. Pulses as short as 49 fs at…
11W Broad Area 976nm DFB Lasers with 58% Efficiency
/forschung/publikationen/11w-broad-area-976nm-dfb-lasers-with-58-efficiency
Optimized 976nm DFB lasers have peak power conversion efficiency of 58%, peak power of 11W, linewidth of ~ 0.4nm and vertical far-field FWHM 28°. A comparison with Fabry-Pérot lasers to the same…
Theoretical and experimental investigations of the limits to the maximum output power of laser diodes
/forschung/publikationen/theoretical-and-experimental-investigations-of-the-limits-to-the-maximum-output-power-of-laser-diodes
The factors that limit both the continuous wave (CW) and the pulsed output power of broad-area laser diodes driven at very high currents are investigated theoretically and experimentally. The…
Modal Behavior, Spatial Coherence, and Beam Quality of a High-Power Gain-Guided Laser Array
/forschung/publikationen/modal-behavior-spatial-coherence-and-beam-quality-of-a-high-power-gain-guided-laser-array
In this paper, we investigate the modal behavior and the spatial coherence properties of a gain-guided laser array emitting an optical output power of more than 50 W in quasi-continuous-wave…
Red-emitting tapered diode lasers for display applications
/forschung/publikationen/red-emitting-tapered-diode-lasers-for-display-applications
High-brightness tapered diode lasers (TPLs) are an ideal high-luminance light source for display applications such as pocket projectors, laser TVs, laser shows, and projectors for virtual reality…
Enhancement of light extraction in ultraviolet light-emitting diodes using nanopixel contact design with Al reflector
/forschung/publikationen/enhancement-of-light-extraction-in-ultraviolet-light-emitting-diodes-using-nanopixel-contact-design-with-al-reflector
We report on a nanopixel contact design for nitride-based ultraviolet light-emitting diodes to enhance light extraction. The structure consists of arrays of Pd ohmic contact pixels and an overlying…