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Advances in tip-enhanced Raman scattering (TERS) for biochemical applications
Raman scattering (TERS) provides exceptional spatial resolution without any need for labeling and has become a versatile tool for biochemical analysis. Two examples will be highlighted here. On the one...
PublicationsOptimal control of coherent anti-Stokes Raman scattering image contrast
Optimal control of CARS image contrast is reported. The setup combines an evolutionary strategy and a closed-loop feedback with a liquid-crystal spatial modulator to control the spectrum of the Stokes...
PublicationsObservation of energetic terahertz pulses from relativistic solid density plasmas
We report the first experimental observation of terahertz (THz) radiation from the rear surface of a solid target while interacting with an intense laser pulse. Experimental and two-dimensional particle-in-cell...
PublicationsThe role of interactions in systems of magnetic iron oxide nanoparticles in the single domain size range
Magnetic nanoparticles are interesting materials for a lot of medical and technical applications. A less experimentally investigated question is the influence of particle packing density on magnetic properties...
PublicationsNanoscale all-normal dispersion optical fibers for coherent supercontinuum generation at ultraviolet wavelengths
We report on the possibilities of nanoscale optical fibers with all-normal dispersion behavior for pulse-preserving and coherent supercontinuum generation at deep ultraviolet wavelengths. We discuss the...
PublicationsYBa2Cu3O7-delta matrix-induced in situ growth of plasmonic Au nanoparticles for biological sensor devices
The authors present a novel method of fabricating crystalline gold nanoparticles used in plasmonic application. The preparation and characterization of monocrystalline Au nanoparticles embedded in an YBa2Cu3O7-...
PublicationsStructure of iron nanolayers embedded in amorphous alloys
Metalloid-free magnetic amorphous layers have long been searched for their presumably high magnetic density and tunable properties. In this investigation, multilayers of iron and amorphous boron-doped...
PublicationsDressed-State Amplification by a Single Superconducting Qubit
We demonstrate an amplification of a microwave signal by a strongly driven two-level system in a coplanar waveguide resonator. The effect known from optics as dressed-state lasing is observed with the...
PublicationsOptical Fiber Micro-Taper with Circular Symmetric Gold Coating for Sensor Applications Based on Surface Plasmon Resonance
We describe a novel, fully symmetrical deposition method, based on a sputtering technique and use of a gold-ring target for deposition of a gold layer uniform around the taper waist. With such a circular...
PublicationsGold-coated optical fiber-microtapers for sensor applications based on the surface plasmon resonance effect
Sensors based on the surface plasmon resonance phenomenon have particular importance in the study of bio-chemical reactions due to their high sensitivity to small refractive index changes in the surrounding...
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