Amin, J., Dussardier, B., Schweizer, T. and Hempstead, M.
Spectroscopic analysis of Er3+ transitions in lithium niobate
Journal of Luminescence, 69, (1), . (doi:10.1016/0022-2313(96)00063-4).
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We report on the results of a spectroscopic analysis of the transition strengths of Er-doped LiNbO3. The line strengths of several transitions from the ground state to excited state manifolds are evaluated from measured polarised absorption spectra and analysed using Judd-Ofelt theory, taking into account the crystal anisotropy. The measured and calculated oscillator strengths at 300 K compare favourably within the typical uncertainties associated with the Judd-Ofelt theory. The Judd-Ofelt parameters obtained have been used to evaluate the excited-state-absorption (ESA) transition strengths from the 4I(11/2) level, which have important implications for pumping Er:LiNbO3 devices
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