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Demonstration of >5kW emissions with good beam quality from two different 7:1 all-glass fiber coupler-types
We report on two low-loss 7:1 single-mode to multi-mode fiber coupler-designs generating more than 5 kW of output power. These all-glass fiber-optical devices have the objective to keep the brightness...
PublicationsHigh-Brightness Incoherent Combination of Fiber Lasers in 7 × 1 Fiber Couplers at Average Powers > 5 kW
We report on the experimental realization of two different low-loss single- to multimode fiber coupler designs, each combining more than 5 kW of output power. The adiabatic mode evolution in the seven-fiber...
PublicationsThe 2015 super-resolution microscopy roadmap
Far-field optical microscopy using focused light is an important tool in a number of scientific disciplines including chemical, (bio)physical and biomedical research, particularly with respect to the study...
PublicationsIn situ spectroelectrochemical and theoretical study on the oxidation of a 4H-imidazole-ruthenium dye adsorbed on nanocrystalline TiO2 thin film electrodes
Terpyridine 4H-imidazole-ruthenium(II) complexes are considered promising candidates for sensitizer in dye sensitized solar cells (DSSCs) by displaying a broad absorption in the visible range, where the...
PublicationsHybrid Optical Fibers – An Innovative Platform for In-Fiber Photonic Devices
The field of hybrid optical fibers is one of the most active research areas in current fiber optics and has the vision of integrating sophisticated materials inside fibers, which are not traditionally...
PublicationsNovel workflow for combining Raman spectroscopy and MALDI-MSI for tissue based studies
Molecular heterogeneity of cancer is a major obstacle in tumor diagnosis and treatment. To deal with this heterogeneity, a multidisciplinary combination of different analysis techniques is of urgent need...
PublicationsA three-axis SQUID-based absolute vector magnetometer
We report on the development of a three-axis absolute vector magnetometer suited for mobile operation in the Earth’s magnetic field. It is based on low critical temperature dc superconducting quantum...
PublicationsDirect absorption measurements in thin rods and optical fibers
We report on the first realization of direct absorption measurements in thin rods and optical fibers using the laser induced deflection (LID) technique. Typically, along the fiber processing chain more...
PublicationsDevelopments in spontaneous and coherent Raman scattering microscopic imaging for biomedical applications
First, the potential role of Raman-based techniques in biomedicine is introduced. Second, an overview about the instrumentation for spontaneous and coherent Raman scattering microscopic imaging is given...
PublicationsLarge-area wet-chemical deposition of nanoporous tungstic silica coatings
We report on a facile procedure for synthesis of nanoporous coatings of tungstic silica through wet-chemical deposition and post-treatment of tungsten-doped potassium silicate solutions. The process relies...
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