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
Rapid shifted excitation Raman difference spectroscopy with a distributed feedback diode laser emitting at 785 nm
/forschung/publikationen/rapid-shifted-excitation-raman-difference-spectroscopy-with-a-distributed-feedback-diode-laser-emitting-at-785nbspnm
A distributed feedback (DFB) laser diode emitting at 785 nm was tested and applied as a light source for shifted excitation Raman difference spectroscopy (SERDS). Due to the physical properties…
Mechanism of ohmic contact formation in AlGaN/GaN high electron mobility transistors
/forschung/publikationen/mechanism-of-ohmic-contact-formation-in-algangan-high-electron-mobility-transistors
We tested various ohmic contact metallization schemes on AlGaN/GaN HEMTs to achieve low contact resistance, good surface morphology and proper line edge definition. Mo, Ni and Pt intermediate layers…
Spectral properties of a semiconductor α-DFB laser cavity
/forschung/publikationen/spectral-properties-of-a-semiconductor-a-dfb-laser-cavity
The experimental and theoretical investigations of spectral properties of a semiconductor α-DFB laser cavity are carried out. It is shown that in these lasers the curvature of mode gain spectra…
Passively mode-locked Yb:LuVO4 oscillator
/forschung/publikationen/passively-mode-locked-ybluvo4-oscillator
Passive mode locking of the ytterbium doped orthovanadate crystal Yb:LuVO4 is reported for the first time. We demonstrate what we believe to be the shortest pulses directly generated with an Yb-doped…
Proton-implanted shallow-ridge quantum-cascade laser
/forschung/publikationen/proton-implanted-shallow-ridge-quantum-cascade-laser
We demonstrate a shallow-ridge quantum-cascade laser (QCL) with performance comparable or better than that of deep-ridge QCLs fabricated from the same wafer. The shallow-ridge QCL emits at /spl ap/4…
Calibration Standards Verification Procedure Using the Calibration Comparison Technique
/forschung/publikationen/calibration-standards-verification-procedure-using-the-calibration-comparison-technique
This article examines the verification procedure of coplanar calibration standards based on the calibration comparison technique. For the first time, different commercially available alumina…
Accurate modelling of InGaN quantum wells
/forschung/publikationen/accurate-modelling-of-ingan-quantum-wells
The internal field, the band structure and the oscillator strengths of the optical transitions of wurtzite strained InGaN quantum wells are accurately computed by a self-consistent solution of the…
A GaAs HBT Low Power 24 GHz Downconverter with On-Chip Local-Oscillator
/forschung/publikationen/a-gaas-hbt-low-power-24-ghz-downconverter-with-on-chip-local-oscillator
In this paper, we present a low-power mixer with integrated local oscillator intended for use in a 24 GHz receiver front-end. The chip is realized using HBT GaAs technology. The…
Hybrid and passive mode-locking of a two-section laser diode in a Fourier transform external cavity
/forschung/publikationen/hybrid-and-passive-mode-locking-of-a-two-section-laser-diode-in-a-fourier-transform-external-cavity
Passive and hybrid modelocking of a two-section laser diode in an external cavity is investigated. The cavity contains a Fourier transformation that enables spatial separation and individual…
Aplanatism for positive and negative refractive index
/forschung/publikationen/aplanatism-for-positive-and-negative-refractive-index
The development of optical metamaterials showed surprising variations of the imaging by optical surfaces between optical materials with different signs of the refractive index. In these cases, the…