Abstract

A simple rate equation model is used to determine the macroscopic upconversion parameter of a heavily erbium-doped oxyfluoride transparent glass ceramic. The fraction of initially excited ions in the metastable state among erbium ions partitioned in the nanocrystallite phase is found and the decay of the S324 level is used to determine the upconversion parameter. The macroscopic energy-transfer upconversion parameter is found to be approximately 4×1018cm3s1, in good agreement with other erbium-doped fluoride materials.

© 2006 Optical Society of America

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