6814 Suchergebnisse für: „“

FastSIM: a practical implementation of fast structured illumination microscopy

A significant improvement in acquisition speed of structured illumination microscopy (SIM) opens a new field of applications to this already well-established super-resolution method towards 3 dimensional...

A Fabry–Perot sensor prototype for low-pressure measurements

An interferometric Fabry–Perot cavity based on hollowcore ring photonic crystal fiber combined with a silicone diaphragm is proposed for low pressure sensing. The sensor exhibits a sensitivity of 0.086...

Very large mode area ytterbium fiber amplifier with aluminum-doped pump cladding made by powder sinter technology

We demonstrate amplification experiments using a very large mode area Yb-doped double-clad fiber with 100 µm aluminum-cer codoped core and 440 µm pump cladding realized by high aluminum codoping. The...

Mode-resolved gain analysis and lasing in multi-supermode multi-core fiber laser

Multi-core fibers (MCFs) with coupled-cores are attractive largemode area (LMA) specialty fiber designs that support the propagation of a few transverse modes often called supermodes (SMs). Compared to...

Formaldehyde preparation methods for pressure and temperature dependent laser-induced fluorescence measurements

Formaldehyde is an excellent tracer for the early phase of ignition of hydrocarbon fuels. It appears in high concentrations and can easily be detected using laser-induced fluorescence (LIF). However, the...

Chirped Phase Mask Interferometer for Fiber Bragg Grating Array Inscription

We present a phase mask inscription technique with two beam interferometry using a lateral non-homogeneous beam splitter to create gratings with non-homogeneous periods, so-called chirped fiber Bragg gratings....

Towards SERS based applications in food analytics: Lipophilic sensor layers for the detection of Sudan III in food matrices

Food safety is an actual topic of great importance for our society which places high demands on analytical methods. Surface enhanced Raman spectroscopy (SERS) meets the requirements for a rapid, sensitive...

Detection of harmful substances by employing surface enhaced Raman spectroscopy (SERS)

Raman spectroscopic approach to monitor the in vitro cyclization of creatine → creatinine

The cyclisation of creatine → creatinine occurs naturally in body through an enzymatic pathway. It acts as a primary source of energy during muscular activity. Several experimental techniques have been...

Droplet based microfluidics combined with surface-enhanced Raman spectroscopy: towards monitoring of Levofloxacin