Vd. Rodriguez et al., ENERGY-TRANSFER AND UP-CONVERSION IN YB-TM CODOPED FLUORINDATE GLASSES, Radiation effects and defects in solids, 135(1-4), 1995, pp. 627-630
The non-resonant energy transfer Yb --> Tm in indium based fluoride gl
asses has been studied in the temperature range 10-300 K. The transfer
parameters donor-donor and donor-acceptor have been calculated from t
he kinetic models and from the Miyakawa-Dexter model. It is concluded
that processes with 1, 2 or 3 phonons participate in the energy transf
er. The mechanism and the efficiency of the up-conversion Tm3+ emissio
n at 800 nm are investigated.