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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…
Finite element analysis of novel semiconductor lasers
/forschung/publikationen/finite-element-analysis-of-novel-semiconductor-lasers
Performance of nano-optical laser devices depends very sensitively on the system's design. We perform finite element simulations to get physical insight and optimize novel laser concepts. Our…
Temperature Dependence of Picosecond Pulse Performance of a DFB Laser
/forschung/publikationen/temperature-dependence-of-picosecond-pulse-performance-of-a-dfb-laser
The temperature dependance of spectra and pulse shapes of gain-switched DFB laser diodes is investigated. Spectral purity can be tuned from a Fabry-Pérot-like multi-mode spectrum to dynamic…
A Novel Atmospheric Microplasma Source with Integrated GaN HEMT Microwave Power Oscillator
/forschung/publikationen/a-novel-atmospheric-microplasma-source-with-integrated-gan-hemt-microwave-power-oscillator
A novel atmospheric microplasma source is presented, where the microwave power is generated by an integrated power oscillator, which is based on a GaN HEMT transistor. A microwave resonator acts as…