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In-situ photoluminescence measurements during MOVPE growth of GaN and InGaN MQW structures
/forschung/publikationen/in-situ-photoluminescence-measurements-during-movpe-growth-of-gan-and-ingan-mqw-structures
In this work we report the first quasi-continuous in-situ photoluminescence study of growing InGaN LED structures inside an industrial-grade metal-organic vapor phase epitaxy (MOVPE) reactor at…
Numerical and experimental investigations of micro-integrated external cavity diode lasers
/forschung/publikationen/numerical-and-experimental-investigations-of-micro-integrated-external-cavity-diode-lasers
We report the results of numerical and experimental investigations of the electrooptical behaviour of an external cavity diode laser device composed of a semiconductor laser and a distant Bragg…
Study of Microintegrated External-Cavity Diode Lasers: Simulations, Analysis, and Experiments
/forschung/publikationen/study-of-microintegrated-external-cavity-diode-lasers-simulations-analysis-and-experiments
This paper reports the results of numerical and experimental investigations of the dynamics of an external-cavity diode laser device composed of a semiconductor laser and an external Bragg grating,…
Efficient generation of 509 nm light by sum-frequency mixing between two tapered diode lasers
/forschung/publikationen/efficient-generation-of-509nbspnm-light-by-sum-frequency-mixing-between-two-tapered-diode-lasers
We demonstrate a concept for visible laser sources based on sum-frequency generation of beam combined tapered diode lasers. In this specific case, a 1.7 W sum-frequency generated green laser at…
Gain-Matched Output Couplers for Efficient Kerr-Lens Mode-Locking of Low-Cost and High-Peak Power Cr:LiSAF Lasers
/forschung/publikationen/gain-matched-output-couplers-for-efficient-kerr-lens-mode-locking-of-low-cost-and-high-peak-power-crlisaf-lasers
We present a detailed investigation of Kerr-lens mode-locking in diode-pumped Cr:LiSAF lasers employing gainmatched output couplers (GMOCs). Single-mode diodes (660 nm, 130 mW) and tapered…
Effect of heterostructure design on carrier injection and emission characteristics of 295nm light emitting diodes
/forschung/publikationen/effect-of-heterostructure-design-on-carrier-injection-and-emission-characteristics-of-295nm-light-emitting-diodes
The effects of the heterostructure design on the injection efficiency and external quantum efficiency of ultraviolet (UV)-B light emitting diodes (LEDs) have been investigated. It was found that the…
Temperature induced degradation of InAlGaN multiple-quantum well UV-B LEDs
/forschung/publikationen/temperature-induced-degradation-of-inalgan-multiple-quantum-well-uv-b-leds
The reliability of InAlGaN multiple quantum well LEDs emitting around 308 nm has been investigated. The UV-B LEDs were stressed at constant current and current density, while the heat sink…
Ultra-narrow linewidth DFB-laser with optical feedback from a monolithic confocal Fabry-Perot cavity
/forschung/publikationen/ultra-narrow-linewidth-dfb-laser-with-optical-feedback-from-a-monolithic-confocal-fabry-perot-cavity
We present a compact, ultra-narrow-linewidth semiconductor laser based on a 780 nm distributed feedback diode laser optically selflocked to a mode of an external monolithic confocal Fabry-Perot…
Distributed Bragg Reflector Ridge Waveguide Lasers Emitting Longitudinal Single Mode at 647 nm
/forschung/publikationen/distributed-bragg-reflector-ridge-waveguide-lasers-emitting-longitudinal-single-mode-at-647nbspnm
Single-mode red emitting diode lasers are still not readily available for many wavelengths. Here, we present diode lasers near the krypton ionwavelength of 647.1 nm, which exhibit a lateral and…
High-power, micro-integrated diode laser modules at 767 and 780 nm for portable quantum gas experiments
/forschung/publikationen/high-power-micro-integrated-diode-laser-modules-at-767-and-780nbspnm-for-portable-quantum-gas-experiments
We present micro-integrated diode laser modules operating at wavelengths of 767 and 780 nm for cold quantum gas experiments on potassium and rubidium. The master-oscillator-power-amplifier…