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In situ measurement of absorption and emission cross sections in Er 3+-doped waveguides for transitions involving thermalized states

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3 Author(s)
J. A. Lazaro ; Dept. de Fisica Aplicada, Zaragoza Univ., Spain ; J. A. Valles ; M. A. Rebolledo

An application to transitions involving thermalized states of a procedure based on the McCumber theory to determine emission and absorption cross sections in waveguides from transversal fluorescence spectra is presented. The procedure is tested in Er-doped Ti:LiNbO3 waveguides to provide accurate cross-section values for the recently attractive 550-nm band. We also study the excited-state absorption transition around 860 nm and present, to our knowledge, the first published cross-section values for this transition

Published in:

IEEE Journal of Quantum Electronics  (Volume:35 ,  Issue: 5 )