Search results for "Colour centre"

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The peculiarities of colour centre production in doped alkali halides

1996

The peculiarities of colour centre production and recombination in KBr, KI crystals doped with Tl, In are examined. The photostimulated dopant ion luminescence (PSL response) follows that of the F-centre production in the subnanosecond time range. It is concluded that the radiation defects in a doped crystal are spatially distributed in the near vicinity of the dopants. To a limited extent the photo- and thermostimulated defect recombination also takes place near the dopant.

CrystalPhotoluminescenceDopantChemistryDopingInorganic chemistryAnalytical chemistryColour centreHalideCondensed Matter PhysicsLuminescenceThermoluminescenceElectronic Optical and Magnetic Materialsphysica status solidi (b)
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Active Media for Optical Data Processing

2002

Peculiarities of colour centre production and their recombination in photostimulated processes in doped alkali halide systems were examined in connection with their practical use as active photostimulable media in miniaturised optoelectronic and photonic devices. The specific interaction of unrelaxed H-centres and electrons with the dopants in different valence and electronic states open a way for widening the scope of multifunctional (logical and mathematical) optical data processing, including the optical chips.

Materials sciencePhotoluminescenceValence (chemistry)Dopantbusiness.industryPhotostimulated luminescenceMechanical EngineeringDopingCondensed Matter PhysicsOpticsMechanics of MaterialsOptical recordingColour centreOptoelectronicsGeneral Materials SciencePhotonicsbusinessMaterials Science Forum
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