Abstract
An efficient energy transfer in a new series of alkali-free barium-alumino-metaphosphate glasses with a transfer efficiency reaching up to 95% has been reported here. It is due to the effective phonon assistance arising with the excellent matching of the present host phonon energy with the energy mismatch between and excited levels. The energy transfer microparameters for forward and back energy transfers are estimated from the spectral data analysis. A parameter, , is proposed as a quantitative measure of sensitization ability per unit loss of the donor. The parameter is found to be highest for the presently reported barium-alumino-metaphosphate glasses.
© 2010 Optical Society of America
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