منابع مشابه
Rare Earth Ion-Doped Upconversion Nanocrystals: Synthesis and Surface Modification
The unique luminescent properties exhibited by rare earth ion-doped upconversion nanocrystals (UCNPs), such as long lifetime, narrow emission line, high color purity, and high resistance to photobleaching, have made them widely used in many areas, including but not limited to high-resolution displays, new-generation information technology, optical communication, bioimaging, and therapy. However...
متن کاملSynthesis and Characterization of High Coercivity Rare-earth Ion Doped
Influence of replacing Sr ions by rare-earth ions (RE) ions on the structural and magnetic properties of high coercivity (Hc) SrFe10Al2O19 hexaferrite have been investigated using X-ray diffraction, transmission electron microscopy, differential scanning calorimeter, and SQUID. A 73% increase in intrinsic coercivity is observed for Al doped SrFe10Al2O19 as compared to that of pure SrFe12O19. Th...
متن کاملCoherent optical ultrasound detection with rare-earth ion dopants.
We describe theoretical and experimental demonstration for optical detection of ultrasound using a spectral hole engraved in cryogenically cooled rare-earth ion-doped solids. Our method utilizes the dispersion effects due to the spectral hole to perform phase-to-amplitude modulation conversion. Like previous approaches using spectral holes, it has the advantage of detection with large étendue. ...
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This paper reviews the progress on rare-earth-ion doped lasers in the wavelength range near 3 μm, with an emphasis on fiber-based devices. Er and Ho lasers are discussed.
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The enhanced laser cooling performance of rare-earth-ion-doped nanocrystalline powders is predicted, compared to the bulk material, using Yb:Y2O3 as the model material. This is achieved by enhancing the off-resonance, phonon-assisted absorption, which is proportional to the three factors considered in this paper: the dopant concentration, the pumping field energy, and the excitation coefficient...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1965
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v65-491