Effect of Cerium codoping on Er : BaY2F8 crystals

Year: 2005

Authors: Sani E., Toncelli A., Tonelli M.

Autors Affiliation: NEST, Dipartimento di Fisica, Università di Pisa, largo Pontecorvo, 3, 56127 Pisa, Italy

Abstract: We present the Erbium I-4(11/2) and I-4(13/2) complete polarized spectroscopic investigation on a series of Er3+, Ce3+: BaY2F8 single crystals as a function of Cerium concentration. The main results of room temperature lifetime investigation show that the I-4(13/2) lifetime reduces from 15.6 ms to 10 ms, the I-4(11/2) lifetime reduces from 8.3 ms to 0.2 ms and S-4(3/2) lifetime reduces from 420 to 110 mu s when adding 4% Ce-codoping. Moreover, in the same experimental conditions, the fluorescence intensity from I-4(13/2) increases by four times when adding 4% Ce, and the intensity of the 3 mu m I-4(11/2) -> I-4(13/2) transition becomes undetectable. The experimental data are interpreted with a rate equation model. The obtained results could be interesting in perspective of obtaining a low-threshold 1.5 mu m Er laser. (c) 2005 Optical Society of America.

Journal/Review: OPTICS EXPRESS

Volume: 13 (22)      Pages from: 8980  to: 8992

KeyWords: Cerium; Crystal structure; Erbium; Light polarization; Mathematical models, Codoping; Fluorescence intensity; Rate equation model; Room temperature, Doping (additives)
DOI: 10.1364/OPEX.13.008980

Citations: 16
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