Novel alkaline-free Er-doped fluorophosphate glasses for broadband optical fiber lasers and amplifiers

Novel alkaline-free Er-doped fluorophosphate glasses for broadband optical fiber lasers and amplifiers

Two sets of Er3+-doped alkaline-free glass systems, MgF2-BaF2-Ba(PO3)2-Al(PO3)3 (MBBA) and Bi(PO3)3-Ba(PO3)2-BaF2-MgF2 (BBBM), have been prepared and investigated with the aim of using them as active media. Radiative lifetimes (taurad) and branching ratios (beta) have been obtained for the excited s...

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Veröffentlicht in:Journal of alloys and compounds 2008-02, Vol.450 (1-2), p.540-545
Hauptverfasser: Choi, Ju H, Shi, Frank G, Margaryan, Alfred, Margaryan, Ashot, van der Veer, Wytze
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container_end_page 545
container_issue 1-2
container_start_page 540
container_title Journal of alloys and compounds
container_volume 450
creator Choi, Ju H
Shi, Frank G
Margaryan, Alfred
Margaryan, Ashot
van der Veer, Wytze
description Two sets of Er3+-doped alkaline-free glass systems, MgF2-BaF2-Ba(PO3)2-Al(PO3)3 (MBBA) and Bi(PO3)3-Ba(PO3)2-BaF2-MgF2 (BBBM), have been prepared and investigated with the aim of using them as active media. Radiative lifetimes (taurad) and branching ratios (beta) have been obtained for the excited states of Er3+. The absorption spectra were recorded to obtain the intensity parameters (Omegat) which are found to be Omega2=4.47X10-20cm2, Omega4=1.31X10-20cm2, Omega6=0.81X10-20cm2 for the MBBA system and Omega2=4.03X10-20cm2, Omega4=1.34X10-20cm2, Omega6=0.53X10-20 for the BBBM system, respectively. The emission cross-section for the 4I13/2- > 4I15/2 transition is determined by the Fuchtbauer-Ladenburg method and found to be 2.35X10-20cm2 and 3.54X10-20cm2 for the MBBA and BBBM system, respectively. Comparison of the measured values to those of Er3+ transitions in other glass hosts suggests that our new glass systems are good candidates for broadband compact optical fiber and waveguide amplifier applications.
doi_str_mv 10.1016/j.jallcom.2007.07.094
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Radiative lifetimes (taurad) and branching ratios (beta) have been obtained for the excited states of Er3+. The absorption spectra were recorded to obtain the intensity parameters (Omegat) which are found to be Omega2=4.47X10-20cm2, Omega4=1.31X10-20cm2, Omega6=0.81X10-20cm2 for the MBBA system and Omega2=4.03X10-20cm2, Omega4=1.34X10-20cm2, Omega6=0.53X10-20 for the BBBM system, respectively. The emission cross-section for the 4I13/2- &gt; 4I15/2 transition is determined by the Fuchtbauer-Ladenburg method and found to be 2.35X10-20cm2 and 3.54X10-20cm2 for the MBBA and BBBM system, respectively. 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Radiative lifetimes (taurad) and branching ratios (beta) have been obtained for the excited states of Er3+. The absorption spectra were recorded to obtain the intensity parameters (Omegat) which are found to be Omega2=4.47X10-20cm2, Omega4=1.31X10-20cm2, Omega6=0.81X10-20cm2 for the MBBA system and Omega2=4.03X10-20cm2, Omega4=1.34X10-20cm2, Omega6=0.53X10-20 for the BBBM system, respectively. The emission cross-section for the 4I13/2- &gt; 4I15/2 transition is determined by the Fuchtbauer-Ladenburg method and found to be 2.35X10-20cm2 and 3.54X10-20cm2 for the MBBA and BBBM system, respectively. 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title Novel alkaline-free Er-doped fluorophosphate glasses for broadband optical fiber lasers and amplifiers
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