6558 Search results for: „“
Broadband, diode-pumped Yb:SiO2 multicomponent glass laser
We successfully demonstrated cw lasing of Ytterbium-doped silica multicomponent glas bulk material. A slope efficiency of 43 % and a tuning range from 1010 - 1080 nm have been achieved.
PublicationsDispersion analysis of perpendicular modes in anisotropic crystals and layers
Until today dispersion analysis could not be successfully applied to evaluate oscillator parameters of modes that have their transition moments perpendicular to the surface of an anisotropic crystal or...
PublicationsDNA hybridization assay at individual, biofunctionalized zinc oxide nanowires
Reliable and efficient identification of DNA is a major goal in on-site diagnostics. One dimensional nanostructures like nan-owires (NW) represent potential sensor structures due to their extreme surface-to-bulk...
PublicationsPhotocatalyst activation by intrinsic stimulation in TiO2-BaTiO3
Antibacterial surface coating is an efficient way to the incidence of microbial infections. Often a coating based on TiO2 is utilized because its photocatalysis has been demonstrated to be a competent...
PublicationsAutofluorescence Imaging of Human RPE Cell Granules using Structured Illumination Microscopy
Background/aims To characterise single autofluorescent (AF) granules in human retinal pigment epithelium (RPE) cells using structured illumination microscopy (SIM). Methods Morphological characteristics...
PublicationsDetection of Nano-Oxidation Sites on the Surface of Hemoglobin Crystals Using Tip-Enhanced Raman Scattering
Hemoglobin nanocrystals were analyzed with tip-enhanced Raman scattering (TERS), surface-enhanced resonance Raman scattering (SERRS) and conventional resonance Raman scattering (RRS) using 532 nm excitation....
PublicationsFibers and fiber-optic components for high-power fiber lasers
The major challenge in the development of monolithic kW class CW fiber lasers is the efficient conversion of pump photons into a high brightness laser beam under the constraints of heat management, long...
PublicationsImproving archaeological site analysis: a rampart in the middle Orkhon Valley investigated with combined geoscience techniques
The Orkhon Valley in Central Mongolia has joined the World Heritage list in 2004. It hosts multiple archaeological sites from Palaeolithic to Recent which allow reconstructing the settlement history in...
PublicationsDirect and absolute absorption measurements in optical materials and coatings by laser induced deflection (LID) technique
Different strategies of the laser induced deflection (LID) technique for direct and absolute absorption measurements are presented. Besides selected strategies for bulk and coating absorption measurements,...
PublicationsFast wavelength switching of a single-frequency disk laser amplifier
For special applications in spectroscopy, tunable single-frequency lasers are required to excite selectively relevant molecules. Amplified Yb:YAG disk lasers provide one opportunity for such lasers with...
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