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Electronic 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...
PublikationenExperimental 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....
PublikationenBi-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...
PublikationenFabrication 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...
PublikationenSQUIDs 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...
PublikationenLinearity of a digital SQUID magnetometer
A digital SQUID magnetometer measures magnetic fields by counting integer magnetic flux quanta within its superconducting input loop. Although resolution is limited in comparison to analog SQUID systems,...
PublikationenComparison of RSFQ logic cells with and without phase shifting elements by means of BER measurements
Rapid single flux quantum (RSFQ) electronics is characterized by a very low switching energy. This advantage leads to a noise susceptibility which becomes a challenge for large-scale circuits as well as...
PublikationenReduced power consumption in superconducting electronics
Rapid single flux quantum (RSFQ) electronics is based on the Josephson junction as active switching element. In standard RSFQ circuits its switching energy is much lower than the static power consumption...
PublikationenTime-domain multiplexed SQUID readout of a bolometer camera for APEX
We describe the development and fabrication of the sub-millimeter APEX bolometer camera (SABOCA) and its installation at the APEX radio telescope in Chile. SABOCA has 37 bolometers for a wavelength of...
PublikationenEnhanced Nucleation of Vortices in Soft Magnetic Materials Prepared by Silica Nanosphere Lithography
Magnetic vortices show promise as data storage structures, however the vortex formation process imposes a lower limit on the element's size. In this article a technique is presented, which application...
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