Researchers have given an overview of the principal inscription techniques and physical properties of fs pulse written in-fiber gratings for fiber optics.
Kristin Mädefessel-Herrmann
New milestone set in laser design
Quantum design strategy pushes high-power vertical external-cavity surface-emitting lasers (VECSELs) beyond the 100 W milestone.
More signal less noise: inproved nonlinear optical imaging
A superior signal to noise ratio for heterodyne detected nonlinear optical imaging can be attained by a newly developed tuned amplifier system in a lock-in free manner, as demonstrated through stimulated Raman scattering imaging of live cells and tissues.
Unconventional laser beams are in good shape
Aside from the classical Gaussian intensity profiles, unconventional laser beam shapes open up new perspectives for technologically relevant areas such as deep-hole drilling, photopolymerization, and nanopatterning.
Enhancing fertility by microfluidics and biophotonics
Lab-on-a-chip method, when combined with biophotonics, can be used to assay for metabolites, to separate gametes via optoelectrical tweezers, or to improve the vitrification of oocytes.
Solving the Mystery of Protein Folding
Nobel laureate Ahmed H. Zewail has summarized his insights into the physical backgrounds of protein folding.
Imaging liver function
What happens in the liver during cholestasis? A novel in vivo imaging technique based on fluorescence microscopy delivers insight into the hepatic excretory function in rat.
From a laboratory curiosity to a promising technology
Solid-state organic amplifiers and lasers have evolved into attractive buildings blocks for on-chip integration. They offer low-cost and simple processing combined with high performance.
Warm atoms for a long memory: Implementing quantum computing
One of the exciting potential applications of electromagnetically induced transparency and slow and stored light is for practical realization of quantum memory, and, ultimately, quantum computing. Recent advances using ensembles of warm atoms in vapor cells have been made.
The need for speed: Developing coherent Raman scattering
Coherent Raman scattering methods have one key advantage over spontaneous Raman microscopy: speed. The (sub-)microsecond pixel dwell times offered by narrowband CRS imaging methods have initiated a new era of chemical imaging applications in biology and biomedicine.