Spectroscopy of divalent rare earth ions in fluoride crystals
نویسندگان
چکیده
منابع مشابه
Time-resolved luminescent VUV-spectroscopy of pure and doped by rare earth ions crystals of strontium fluoride
The spectroscopic properties SrF2–Eu(1%), SrF2–Er(1%) and nominal pure SrF2 crystals have been studied using time-resolved vacuum ultraviolet (VUV) spectroscopy under pulsed synchrotron radiation excitation. The 4f24f 5d (f–d) and 4f24f (f f) excitation spectra and emission spectra (with and without of time resolution) have been investigated in the wide energy region at 8 and 295K. Moreover, th...
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Spectroscopic characteristics of Pr3+ and Eu3+ in K2Na2GdF7, K5Li2GdF10 and K3GdF6 fluoride matrices are considered. Crystal structures of these compounds have been ascertained based on X-ray measurement on single crystal samples. Energies of lattice vibrations have been derived from IR and Raman spectra. Spectroscopic features of crystals in the VUV region were studied using experimental facil...
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Spectral and kinetic properties of vacuum ultraviolet (VUV) luminescence from different fluoride crystals doped with Nd, Er or Tm are discussed. Concentration quenching of VUV luminescence, the impact mechanism of the energy transfer from the matrix to the emission centers as well as nonradiative relaxation processes in the rare earth ions have been detected and studied. The crystal properties ...
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We investigated the effect of rare earth impurities on the cooling efficiency of Yb³⁺:LiYF₄ (Yb:YLF). The refrigeration performance of two single crystals, doped with 5%-at. Yb and with identical history but with different amount of contaminations, have been compared by measuring the cooling efficiency curves. Spectroscopic and elemental analyses of the samples have been carried out to identify...
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Recent developments in the spectroscopy of the rare earth oxides using laser techniques are reviewed. A Ligand Field theoretical approach describing the electronic states is outlined along with the various experimental techniques that have been used as diagnostic tools to test various aspects of the theory. Results for several molecules are outlined. INTRODUCTION The emission and absorption spe...
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ژورنال
عنوان ژورنال: Journal of Luminescence
سال: 2016
ISSN: 0022-2313
DOI: 10.1016/j.jlumin.2015.06.055