Optically Unstable Phase from Ion-Ion Interactions in an Erbium-Doped Crystal

Optically induced structural phase transitions in ion Coulomb crystals

Peter Horak,1 Aurélien Dantan,2 and Michael Drewsen2 1Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom 2QUANTOP, Danish National Research Foundation Center for Quantum Optics, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark (Received 14 February 2012; revised manuscript received 10 August 2012; published 31 Oct...

Processing for optically active erbium in silicon by film co-deposition and ion-beam mixing

Techniques of film deposition by co-evaporation, ion-beam assisted mixing, oxygen ion implantation, and thermal annealingwere been combined in a novel way to study processing of erbium-in-silicon thinfilm materials for optoelectronics applications. Structures with erbium concentrations above atomic solubility in silicon and below that of silicide compoundswere prepared by vacuum co-evaporation ...

Ion exchange phase transitions in"doped"water--filled channels

Ion transport through narrow water–filled channels is impeded by a high electrostatic barrier. The latter originates from the large ratio of the dielectric constants of the water and a surrounding media. We show that “doping”, i.e. immobile charges attached to the walls of the channel, substantially reduces the barrier. This explains why most of the biological ion channels are “doped”. We show ...

Experimental evidence of Er³⁺ ion reduction in the radiation-induced degradation of erbium-doped silica fibers.

The gain of erbium-doped fiber amplifiers is damaged by irradiation partly because of creation of color centers responsible of excess absorption at pump and signal wavelengths. Based on the combination of thermally stimulated luminescence and spectrophotometry, this Letter demonstrates that a part of the gain loss should be associated with the reduction of the density of Er3+ ions by irradiation.

Droplet Phase Ion-Ion Chemistry