Quantitative Analysis of Energy Transfer and Origin of Quenching in Er(3+)/Ho(3+) Codoped Germanosilicate Glasses. Academic Article uri icon

abstract

  • The energy transfer mechanism between Ho(3+) and Er(3+) ions has been investigated in germanosilicate glass excited by 980 nm laser diode. A rate equation model was developed to demonstrate the energy transfer from Er(3+) to Ho(3+) ions, quantitatively. Energy transfer efficiency from the Er(3+):(4)I13/2 to the Ho(3+):(5)I7 level can reach as high as 75%. Such a high efficiency was attributed to the excellent matching of the host phonon energy with the energy gap between Er(3+):(4)I13/2 and Ho(3+):(5)I7 levels. In addition, the energy transfer microparameter (CDA) from Er(3+):(4)I13/2 to Ho(3+):(5)I7 level was estimated to (4.16 0.03) 10(-40) cm(6)s(-1) via the host-assisted spectral overlap function, coinciding with the CDA (2,88 0.04) 10(-40) cm(6)s(-1) from decay analysis of the Er(3+):(4)I13/2 level which also indicated hopping migration-assisted energy transfer. Furthermore, the concentration quenching of Ho(3+):(5)I7 (5)I8 transition was the dipole-dipole interaction in the diffusion-limited regime, and the quenching concentration of Ho(3+) reached 4.13 10(20) cm(-3).

published proceedings

  • J Phys Chem A

author list (cited authors)

  • Wei, T., Tian, Y., Tian, C., Cai, M., Jing, X., Li, B., ... Xu, S.

citation count

  • 29

complete list of authors

  • Wei, Tao||Tian, Ying||Tian, Cong||Cai, Muzhi||Jing, Xufeng||Li, Bingpeng||Chen, Rong||Zhang, Junjie||Xu, Shiqing

publication date

  • July 2015