Avalanche upconversion in Tm3+-doped BIGaZYTZr glass
作者： M.F. Joubert , S. Guy , C. Linarès , B. Jacquier , J.L. Adam
DOI: 10.1016/0022-3093(95)00090-9
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摘要: Abstract Intense blue fluorescence is observed in a Tm3+-doped BIGaZYTZr fluoride glass after single wavelength red or infrared CW pumping. Dynamics and power dependences of both1G4 and1D2 fluorescences under 648.7 nm excitation reveal photon avalanche mechanism the 3 mol% doped sample. Selective pulsed indicate an almost purely radiative relaxation at low concentration agreement with Judd-Ofelt calculations. At higher concentration, cross-relaxation energy transfer excited state absorption compete to feed the1G4 levels. The temperature time these are investigated.
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