Transfer and backtransfer processes in Yb3+-Er3+ codoped Strontium Barium Niobate glass-ceramics

► We model the transfer and backtransfer processes in a rare earth doped Strontium Barium Niobate samples. ► The samples are Er3+ or Yb3+ single doped and Yb3+-Er3+ codoped. ► We studied that the dynamics of these transfer processes has been carried out using a general method called “transfer function model”.