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High-energy soliton pulse generation with a passively mode-locked Er/Yb-doped multifilament-core fiber laser
We report the generation of high-energy short pulses from a mode-locked erbium/ytterbium-doped largemode-area multifilament-core fiber laser operating in the purely anomalous dispersion regime. The self-starting...
PublicationsA disposable and cost efficient microfluidic device for the rapid chip-based electrical detection of DNA
Requirements for a point-of-care device are an easy and robust read-out and – above all – a simple handling. We integrated an established robust electrical read-out for DNA-chips into a microfluidic...
PublicationsNanostructural Superconducting Materials for Fault Current Limiters and Cryogenic Electrical Machines
Materials of the Y–Ba–Cu–O (melt-textured YBa2Cu3O7¡±-based materials or MT-YBCO) and Mg–B–O (MgB2-based materials) systems with high superconducting performance, which can be attained due...
PublicationsTransversal Load Sensing With Fiber Bragg Gratings in Microstructured Optical Fibers
We present fiber Bragg grating based transversal load sensing with a highly birefringent microstructured optical fiber. For the bare fiber, the change of the Bragg peak separation under a transverse line...
PublicationsRecent advances in single-molecule sequencing
Recent advances in sequencing technologies exhibit a tendency towards single-molecule sequencing, which eventually will lead to the commercial implementation of such platforms. For this purpose dye labelling...
PublicationsElectronic photon echo spectroscopy and vibrations
Coupling between electronic and nuclear degrees of freedom in Rhodamine 800 has been studied using fluorescence line narrowing (FLN) and three-pulse photon echo peak shift (3PEPS). From the FLN measurement...
PublicationsExperimental evaluation of the current-phase relation of a Josephson junction
Josephson junctions act as active elements in superconducting electronics. The behavior of this nonlinear element is characterized by the relation between current and the quantum mechanical phase-difference....
PublicationsBi-directional terahertz emission from gold coated nanogratings by excitation via femtosecond laser pulses
We report on the investigation of terahertz (THz) emission from gold coated nanogratings (500 nm grating constant) upon femtosecond laser irradiation (785 nm, 150 fs, 1 kHz, ≤1 mJ/pulse). Unlike common...
PublicationsFabrication and characterization of silver deposited micro fabricated quartz arrays for surface enhanced Raman spectroscopy (SERS)
Microfabricated silver deposited two-dimensional quartz gratings are developed for the use as plasmonic arrays for surface enhanced Raman spectroscopy (SERS). The SERS technique provides enormous signal...
PublicationsSQUIDs based on submicrometer-sized Josephson tunnel junctions fabricated in a cross-type technology
We report on the properties of submicrometer-sized Josephson tunnel junctions fabricated in a cross-type technology. The quality of the junctions is indicated by current density profiles obtained from...
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