Suche
Regeln für die Suche
- Nur Wörter mit 2 oder mehr Zeichen werden akzeptiert
- Maximal 200 Zeichen insgesamt
- Leerzeichen werden zur Trennung von Worten verwendet, "" kann für die Suche nach ganzen Zeichenfolgen benutzt werden (keine Indexsuche)
- UND, ODER und NICHT sind Suchoperatoren, die den standardmäßigen Operator überschreiben. +/|/- entspricht UND, ODER und NICHT als Operatoren
- Alle Suchwörter werden zu Kleinschreibung konvertiert
975 nm high power diode lasers with high efficiency and narrow vertical far field enabled by low index quantum barriers
/forschung/publikationen/975nbspnm-high-power-diode-lasers-with-high-efficiency-and-narrow-vertical-far-field-enabled-by-low-index-quantum-barriers
For optimal coupled power into fiber, high power diode lasers should operate efficiently with smallest possible vertical far field emission angle. Although waveguide and cladding layers can be…
On the Recovery Time of Highly Robust Low-Noise Amplifiers
/forschung/publikationen/on-the-recovery-time-of-highly-robust-low-noise-amplifiers
Recently, GaN-based low-noise amplifiers (LNAs) were shown to provide high ruggedness together with low noise figure. Since no limiter is required to protect the input, these LNAs allow for…
Conductively Cooled 1 kW-QCW Diode Laser Stacks Enabling Simple Fiber Coupling
/forschung/publikationen/conductively-cooled-1nbspkw-qcw-diode-laser-stacks-enabling-simple-fiber-coupling
A new mini-bar design densely packed with 13 emitters in a 1.6 mm aperture has been developed. These minibars deliver >200 W output. With a very low divergence of 95% power enclosed in…
Finite element simulation of the optical modes of semiconductor lasers
/forschung/publikationen/finite-element-simulation-of-the-optical-modes-of-semiconductor-lasers
In the present paper we investigate optical near fields in semiconductor lasers. We perform finite element simulations for two different laser types, namely a super large optical waveguide (SLOW)…
High-Brightness 980-nm Tapered Laser - Optimization of the Laser Rear Facet
/forschung/publikationen/high-brightness-980-nm-tapered-laser-optimization-of-the-laser-rear-facet
We present experimental results on a gain-guided tapered diode laser with rear facet coating variation from 98% down to 5% reflectivity. We show that in comparison to the common high reflection…
Carrier injection in InAlGaN single and multi-quantum-well ultraviolet light emitting diodes
/forschung/publikationen/carrier-injection-in-inalgan-single-and-multi-quantum-well-ultraviolet-light-emitting-diodes
316 nm (In)AlGaN light emitting diodes (LEDs) with one, three, five and seven quantum wells (QWs) have been investigated. The carrier injection in the devices is simulated and compared with…
11W broad area 976 nm DFB lasers with 58% power conversion efficiency
/forschung/publikationen/11w-broad-area-976nbspnm-dfb-lasers-with-58-power-conversion-efficiency
A report is presented on how distributed feedback (DFB) lasers can achieve high optical power and power conversion efficiency together with a narrow vertical emission angle. Recently developed…
Pulse-shape improvement during amplification and second-harmonic generation of picosecond pulses at 531 nm
/forschung/publikationen/pulse-shape-improvement-during-amplification-and-second-harmonic-generation-of-picosecond-pulses-at-531nbspnm
We study second-harmonic generation of picosecond pulses in bulk periodically poled lithium niobate using an all-semiconductor master oscillator-power amplifier with gain-switched seed as our…
(In)AlGaN deep ultraviolet light emitting diodes with optimized quantum well width
/forschung/publikationen/inalgan-deep-ultraviolet-light-emitting-diodes-with-optimized-quantum-well-width
The effect of the quantum well (QW) width on the light output and efficiency of ultraviolet (UV) light emitting diodes (LEDs) has been investigated. The carrier injection in the devices is simulated…
Application of Diode-Laser Raman Spectroscopy for In situ Investigation of Meat Spoilage
/forschung/publikationen/application-of-diode-laser-raman-spectroscopy-for-in-situ-investigation-of-meat-spoilage
Raman spectroscopy is well suited for noninvasive and non-destructive analysis. The spectra provide detailed information about the composition of the matter like a fingerprint on molecular level.…