Spectral luminescence and information characteristics of transparent lead fluoride nano-glass-ceramics doped with erbium ions |
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Authors: | V A Aseev Yu A Varaksa A V Klement’eva E V Kolobkova N V Nikonorov G V Sinitsyn and M A Khodasevich |
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Institution: | 1.St. Petersburg State University of Information Technologies, Mechanics, and Optics,St. Petersburg,Russia;2.Stepanov Institute of Physics,National Academy of Sciences of Belarus,Minsk,Belarus;3.St. Petersburg State Institute of Technology (Technical University),St. Petersburg,Russia |
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Abstract: | Spectral luminescence properties of synthesized transparent nano-glass-ceramics doped with erbium ions are studied. It is
shown that, as a result of the secondary heat treatment of nano-glass-ceramics, the width of the luminescence spectrum at
half maximum increases more than by 15 nm. Luminescence life-time dependences of erbium ions in studied samples are measured,
their absorption cross-sections are determined, and their emission cross-sections are calculated by the McCumber method. Spectral
and ultimate information characteristics of erbium-doped fiber amplifiers based on synthesized nano-glass-ceramics are numerically
simulated. It is shown that, in the unsaturated gain regime, a substantial ripple of the absorption and emission cross-section
spectra and shorter lifetime of the metastable level of the erbium ion reduce the pumping radiation power that is required
for obtaining the given peak gain, narrow the gain spectra, and lower the transmission capacity of devices based on nano-glass-ceramics
compared to the initial glass. Conversely, fiber amplifiers based on calcium fluoride glass-ceramics, for which the lifetime
of the metastable level increases with increasing annealing temperature, have an advantage in the transmission capacity over
devices based on the primary glass. |
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