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Yb-doped large mode area fiber for beam quality improvement using local adiabatic tapers with reduced dopant diffusion

A newly designed all-solid step-index Yb-doped aluminosilicate large mode area fiber for achieving high peak power at near diffraction limited beam quality with local adiabatic tapering is presented. The...

Biophotonics: the big picture

The 5th International Conference on Biophotonics (ICOB) held April 30 to May 1, 2017, in Fremantle, Western Australia, brought together opinion leaders to discuss future directions for the field and opportunities...

Bridging Volume Levels in Droplet-based Microfluidics – Automated Electro-coalescence in Series of Droplet Sets

Hydrogel-Embedded Model Photocatalytic System Investigated by Raman and IR Spectroscopy Assisted by Density Functional Theory Calculations and Two-Dimensional Correlation Analysis

The presented study reports the synthesis and the vibrational spectroscopic characterization of different matrix-embedded model photocatalysts. The goal of the studyis to investigate the interaction of...

Employing Theories Far beyond Their Limits – Linear Dichroism Theory

Using linear polarized light, it is possible in case of ordered structures, such as stretched polymers or single crystals, to determine the orientation of the transition moments of electronic and vibrational...

Phase formation and magnetic properties of CoFe2O4/CoFe2 nanocomposites

Nanosize CoFe2O4 particles were synthesized via thermal decomposition of a mixed oxalate precursor; a mean ferrite particle size of 5 nm to 35 nm is tailored through variations of the decomposition temperature....

UV-Raman spectroscopic identification of fungal spores important for respiratory diseases

Fungal spores are one of several environmental factors responsible for causing respiratory diseases like asthma ,chronic obstructive pulmonary disease (COPD), and aspergillosis. These spores also are able...

A SERS-based molecular sensor for selective detection and quantification of copper(II) ions

A novel SERS-based molecular sensor for detection and quantification of copper(II) ions with very good specificity and selectivity is reported in this work. The sensing is enabled by the employment of...

Signal, noise, and resolution in linear and nonlinear structured-illumination microscopy

Structured-illumination microscopy allows wide field fluorescence imaging with resolution beyond the classical diffraction limit. Its linear form extends resolution by a factor of two, and its nonlinear...

Observation of Giant Infrared Circular Dichroism in Plasmonic 2D-Metamaterial Arrays

We report the observation of an enormous circular dichroism (CD) response in broadband surface enhanced infrared absorption sensing arrays. In our experiment, a 2D-metamaterial chiral cross-slit array...