Open AccessQuantification of energy transfer processes in LiLa_9(SiO_4)_6O_2:Er^3+/Yb^3+ under selective Er^3+ excitation
Author(s) -
Martina Marín-Dobrincic,
Jorge GarcíaSevillano,
Marco Bettinelli,
Fabio Piccinelli,
Eugenio Cantelar,
F. Cussó
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.014646
Subject(s) - excitation , materials science , ion , analytical chemistry (journal) , energy transfer , atomic physics , emission spectrum , spectral line , optics , chemistry , physics , chromatography , quantum mechanics , astronomy , organic chemistry
The energy transfer mechanisms between Er3+ and Yb3+ ions have been investigated in LiLa9(SiO4)6O2 under selective Er3+ excitation. IR emission spectra, measured in the CW excitation regime, were used to establish a relationship between the macroscopic transfer and back transfer parameters. These measurements were combined with the results obtained under pulsed excitation to quantify the absolute values of transfer (Yb3+ → Er3+) and back transfer coefficients (Er3+ → Yb3+), C25 = 9.5 × 10−17 cm3s−1 and C52 = 1.4 × 10−17 cm3s−1, respectively. Additionally, it has been observed an energy transfer that reduces the quantum efficiency of the green emitting Er3+ levels. The corresponding macroscopic coefficient has been also determined (CGQ = 6.1 × 10−17 cm3s−1).