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Reliability of diode lasers for space applications
/forschung/publikationen/reliability-of-diode-lasers-for-space-applications
Qualification results of diode lasers for space applications are presented. Quantum well lasers (AlGaAs / GaAsP at 808 nm) were subjected to accelerated life test. No sudden failure was observed…
A Novel Load-Pull Setup with Envelope Calibration for Bias Modulated Measurements
/forschung/publikationen/a-novel-load-pull-setup-with-envelope-calibration-for-bias-modulated-measurements
In this paper a measurement system for evaluation of RF-Power transistors in high-efficiency operation using drain bias-modulation is presented. The system is based on a novel 2- tone load-pull…
A Load-Pull Based Device Evaluation Method for Bias Modulated Applications
/forschung/publikationen/a-load-pull-based-device-evaluation-method-for-bias-modulated-applications
In this paper an evaluation method for RF-Power transistors for high-efficiency applications using drain biasmodulation is presented. The method is based on post processing of continuous wave…
Tapered Diode Laser With Reverse Bias Absorber Section
/forschung/publikationen/tapered-diode-laser-with-reverse-bias-absorber-section
We present experimental results about gain-guided tapered diode laser having reverse bias absorber sections beside the ridge-waveguide. Due to these sections, we can avoid the propagation of unwanted…
Compact second-harmonic generation laser module with 1 W optical output power at 490 nm
/forschung/publikationen/compact-second-harmonic-generation-laser-module-with-1nbspw-optical-output-power-at-490nbspnm
We demonstrate continues-wave 1 W at 490 nm on a 2.5 cm3 micro-optical bench using single-path second-harmonic generation with a periodically poled MgO:LiNbO3 bulk crystal. The pump…
Microsystem Light Source at 488 nm for Shifted Excitation Resonance Raman Difference Spectroscopy
/forschung/publikationen/microsystem-light-source-at-488-nm-for-shifted-excitation-resonance-raman-difference-spectroscopy
A microsystem light source emitting at 488 nm was tested and applied as a light source for shifted excitation resonance Raman difference spectroscopy (SERRDS). A nonlinear frequency conversion using…
Biological Stimulation of the Human Skin Applying Health-Promoting Light and Plasma Sources
/forschung/publikationen/biological-stimulation-of-the-human-skin-applying-health-promoting-light-and-plasma-sources
In the frame of BMBF project "BioLiP", new physical treatment techniques aiming at medical treatment of the human skin have been developed. The acronym BioLiP stands for "Desinfektion,…
Room temperature 633 nm tapered diode lasers with external wavelength stabilisation
/forschung/publikationen/room-temperature-633nbspnm-tapered-diode-lasers-with-external-wavelength-stabilisation
Small-sized modules that have an output power P > 100 mW with a spectral width <0.25 pm at 15°C are presented. The modules, aimed at HeNe laser applications, are stabilised…
Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers
/forschung/publikationen/improving-the-stability-of-distributed-feedback-tapered-master-oscillator-power-amplifiers
We consider theoretically the lasing properties of distributed-feedback master-oscillator power-amplifiers which are compact semiconductor laser devices capable of emitting a high brilliance beam at…
Dynamics and stability improvement of DFB tapered master-oscillator power-amplifiers
/forschung/publikationen/dynamics-and-stability-improvement-of-dfb-tapered-master-oscillator-power-amplifiers
We consider theoretically the lasing properties of distributed-feedback master-oscillator poweramplifiers which are compact semiconductor laser devices capable of emitting a high brilliance beam at…