6814 Suchergebnisse für: „“

Nanotechnology enhanced solar cells prepared on laser-crystallized polycrystalline thin films (< 10 µm)

It is shown in this paper that indeed silicon nanotechnology can significantly improve the performance of solar cells made on low-cost materials like polycrystalline silicon (pc-Si) thin films deposited...

Tapered large-core 976 nm Yb-doped fiber laser with 10 W output power

We report on a tapered large-core Yb fiber laser operating at 976 nm emission wavelength. It was realized using a high-numerical aperture large-core fiber with 126 µm core diameter, which was fabricated...

TEM analysis of Si thin films prepared by diode laser induced solid phase epitaxy at high temperatures

The solid phase crystallization of amorphous silicon thin films deposited on -oriented wafers at high temperatures was investigated. The films were heated up by diode laser irradiation for some milliseconds...

The influence of deposition parameters on Ti/Pt film growth by confocal sputtering and the temperature dependent resistance behavior using SiOx and Al2O3 substrates

This paper presents the influence of sputtering power and pressure on microstructural growth and morphology of Ti/Pt films and their electrical properties for possible applications in thin film thermal...

Effect of the silica bridge thickness of suspended core fiber on the acousto-optic modulation of fiber Bragg gratings

The acousto-optic modulation of Bragg gratings is investigated for suspended-core fibers. The bridge thickness is increased and the mechanical and the grating properties are simulated. An increase of the...

Suspended Core Size Effect in Interaction of Longitudinal Acoustic Waves and Fiber Bragg Gratings

The interaction between longitudinal acoustic waves and Bragg gratings is numerically investigated for suspended core fibers. The incicle core is increased from 1 to 6.6 µm and the mechanical properties...

Draw tower fi ber Bragg gratings in polarization-maintaining fi bers for the independent measurement of strain and temperature

Advanced Attenuation and Fluorescence Measurement Methods in the Investigation of Photodarkening and Related Properties of Ytterbium-Doped Fibers

Considering the continuous development of ytterbium (Yb)-doped fibers for fiber lasers and amplifiers, thorough characterization of the features and quality of such fibers is necessary now more than ever....

Analysis of a dc SQUID readout scheme with voltage feedback circuit and low-noise preamplifier

We analyzed the dc SQUID with voltage feedback circuit (VFC) and a low-noise room temperature preamplifier to evaluate the feasibility of a low-noise SQUID direct-coupled readout scheme (DRS), possibly...

Quantized resonator field coupled to a current-biased Josephson junction in circuit QED

A Lagrangian formalism is used toderive the Hamiltonian for a λ/4 resonator shunted by a current-biased Josephson junction. The eigenstates and the quantum dynamics of the system are analyzed numerically,...