6814 Suchergebnisse für: „“
Yb3+-doped rod-type amplifiers with local adiabatic tapers for peak power scaling and beam quality improvement
The use of short local tapers in large mode area fiber amplifiers is proposed for peak power scaling while maintaining good beam quality. To avoid modal distortions, the powder-sintering (REPUSIL) method...
PublikationenDirect Raman spectroscopic measurements of biological nitrogen (N2) fixation under natural conditions: A novel analytical approach for studying nitrogenase activity
Biological N2 fixation is a major input of bioavailable nitrogen, which represents the most frequent factor limiting the agricultural production throughout the world. Especially, the symbiotic association...
PublikationenLaser irradiation influence on Si/3C-SiC/Si heterostructures for subsequent 3C-SiC membrane elaboration
The cubic polytype of silicon carbide is a stimulating candidate for Micro-Electro-Mechanical-Systems (MEMS) applications due to its interesting physical and chemical properties. Recently, we demonstrated...
PublikationenEnhancing photocatalytic hydrogen generation: The impact of the peripheral ligands in Ru/Pd and Ru/Pt complexes
The synthesis, photophysical properties and photocatalytic efficiency of a range of novel supramolecular assemblies of the type [Ru(dceb)2(µ-bisbpy)MCl2](PF6)2 and [Ru(bpy)2(µ-bisbpy)MCl2](PF6)2 (where...
PublikationenGermania and alumina dopant diffusion and viscous flow effects at preparation of doped optical fibers
We report on germania and alumina dopant profile shift effects at preparation of compact optical fibers using packaging methods (Stack-and-Draw method, Rod-in-Tube (RiT) technique). The sintering of package...
PublikationenSurface-enhanced Raman spectroscopy of cell lysates mixed with silver nanoparticles for tumor classification
The throughput of spontaneous Raman spectroscopy techniques for cell identification is limited due to the relatively low sensitivity and long acquisition time. This throughput can be increased by surface...
PublikationenDiscrete tuning concept for fiber-integrated lasers based on tailored FBG arrays and a theta cavity layout
e demonstrate a novel tuning concept for pulsed fiber-integrated lasers with a fiber Bragg grating (FBG) array as discrete and tailored spectral filter as well as a modified laser design. Based on a theta...
PublikationenDual-focus coherent anti-Stokes Raman scattering microscopy using a compact two-beam fiber laser source
We have developed a dual-focus coherent anti-Stokes Raman scattering (CARS) microscope based on a dual output, compact fiber laser source. The underlying concepts of time-multiplexed, two-beam scanning...
PublikationenNanoboomerang-based inverse metasurfaces – a promising path towards ultrathin photonic devices for transmission operation
Metasurfaces have revolutionized photonics due to their ability to shape phase fronts as requested and to tune beam directionality using nanoscale metallic or dielectric scatterers. Here we reveal that...
PublikationenSelf-healing polymer networks based on reversible michael addition reactions
A new polymeric material utilizing a highly efficient as well as reversible thiol-ene click reaction is presented. For this purpose, a trithiol is reacted with a bisbenzylcyanoacetamide derivative resulting...
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