6559 Search results for: „“
Low-loss single-mode guidance in large-core antiresonant hollow-core fibers
We present an approach how to combine large mode field diameters with effective single-mode guidance in a hollow-core antiresonant optical fiber. We demonstrate experimentally and in simulations that single-mode...
PublicationsFiber-based dual-focus time-demultiplexed second harmonic generation microscopy
We present a dual-focus second harmonic generation (SHG) microscopy approach based on stable, compact, and inexpensive fiber technology. One-tenth of the fiber laser output is coupled into a 100 m (=500...
PublicationsMiniaturized multiplex PCR with melting curve analysis for detection and discrimination of Legionella pneumophila from Legionella spp. and other waterborne pathogens
Legionella pneumophila are gram negative pathogenic water organisms with worldwide significance. Current methods for detection of these pathogens are time and/or cost intensive. We describe a miniaturized...
PublicationsCharacterization of pH dependent Mn(II) oxidation strategies and formation of a bixbyite-like phase by Mesorhizobium australicum T-G1
Despite the ubiquity of Mn oxides in natural environments, there are only a few observations of biological Mn(II) oxidation at pH < 6. The lack of low pH Mn-oxidizing bacteria (MOB) isolates limits...
PublicationsSuppression of spin-exchange relaxation in tilted magnetic fields within the geophysical range
We present a detailed experimental and theoretical study of the spin-exchange mechanism arising in the electronic ground states of alkali-metal vapor atoms. As opposed to the well-explored formation of...
PublicationsRaman spectroscopic monitoring of the growth of pigmented and non-pigmented mycobacteria
Raman microspectroscopy has increased in popularity in the field of microbiology because it allows a spectral fingerprinting of bacterial pathogens at an unrivaled speed, which is important for the early...
PublicationsIdentification of vancomycin interaction with Enterococcus faecalis within 30 min of interaction time using Raman spectroscopy
Vancomycin is an important glycopeptide antibiotic which is used to treat serious infections caused by Grampositive bacteria. However, during the last years, a tremendous rise in vancomycin resistances,...
PublicationsRaman spectroscopic differentiation of planktonic bacteria and biofilms
Both biofilm formations as well as planktonic cells of water bacteria such as diverse species of the Legionella genus as well as Pseudomonas aeruginosa, Klebsiella pneumoniae, and Escherichia coli were...
PublicationsDiscretely tunable pulsed fiber laser based on tailored FBG arrays
We present a discrete tuning concept for pulsed fiber laser using a fiber Bragg grating (FBG) array as spectral filter, which combines a fiber-integrated structure with excellent flexibility to implement...
PublicationsFiber-integrated concept to electrically tune pulsed fiber lasers based on step-chirped fiber Bragg grating arrays
We present a novel method to discretely tune the emission wavelength of pulsed fiber-integrated lasers. As spectral filter, a step-chirped fiber Bragg grating (FBG) array is employed combining a monolithic...
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