In this work, Er3+ and Tm3+-doped LiLa9(SiO4)(6)O-2 crystals have been grown from an Li2MoO4 flux in the 1360-940 degrees C temperature range. Optical absorption spectra have been measured to obtain the experimental oscillator strengths of the transitions from the ground state to the excited levels. Judd-Ofelt calculations have been performed to estimate the Omega(2), Omega(4) and Omega(6) intensity parameters. The dynamics of selected Er3+ and Tm3+ manifolds have been investigated under selective pulsed excitation in order to determine the energy gap law by comparing the observed decay rates with the Judd-Ofelt predictions.
Optical transition probabilities in Er3+- and Tm3+-doped LiLa9(SiO4)6O2 crystals
BETTINELLI, Marco Giovanni
2010-01-01
Abstract
In this work, Er3+ and Tm3+-doped LiLa9(SiO4)(6)O-2 crystals have been grown from an Li2MoO4 flux in the 1360-940 degrees C temperature range. Optical absorption spectra have been measured to obtain the experimental oscillator strengths of the transitions from the ground state to the excited levels. Judd-Ofelt calculations have been performed to estimate the Omega(2), Omega(4) and Omega(6) intensity parameters. The dynamics of selected Er3+ and Tm3+ manifolds have been investigated under selective pulsed excitation in order to determine the energy gap law by comparing the observed decay rates with the Judd-Ofelt predictions.
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