The microscopic interaction parameters for Er 3+/Ho 3+ energy transfer in tellurite glasses

Abstract

We investigate the energy transfer between Er 3+/Ho 3+ in tellurite glasses. The main channels of energy transfer between Er 3+/Ho 3+ are analyzed in detail. The microscopic interaction parameters of resonant and non-resonant (phonon-assisted) energy transfer parameters via Er 3+→Ho 3+ are calculated. The result shows that the resonant energy transfers Er 3+( 2H 11/2( 4S 3/2))→Ho 3+( 5F 4( 5S 2)) and Er 3+( 4F 9/2)→Ho 3+( 5F 5) are very efficient and non-resonant energy transfers Er 3+( 4I 13/2)→Ho 3+( 5I 7) and Er 3+( 4I 11/2)→Ho 3+( 5I 6), which are a phonon-assisted energy transfer process because of energy mismatch are also existed and cannot be neglected.