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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 22, Iss. 6 — Jun. 1, 2005
  • pp: 1255–1259

Energy transfer in PbO-Bi2O3-Ga2O3 glasses codoped with Yb3+ and Er3+

Luciana R. P. Kassab, Marcos E. Fukumoto, and Laércio Gomes  »View Author Affiliations


JOSA B, Vol. 22, Issue 6, pp. 1255-1259 (2005)
http://dx.doi.org/10.1364/JOSAB.22.001255


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Abstract

The mechanism of the Yb3+-->Er3+(PbO-Bi2O3-Ga2O3) glasses by use of several combinations of Yb3+ and Er3+ concentrations. The measured luminescence decay curves of the donors are used to determine the experimental transfer rates; the best fittings for them are obtained with single exponentials. The microparameters are calculated and used to determine the theoretical rates. The real migration mechanism, involved in the energy transfer of each sample, diffusion, or hopping, is determined by means of the experimental transfer rates and the theoretical ones; fast excitation diffusion among donors, followed by a direct donor to acceptor energy transfer, predominates. A comparison is made with the energy-transfer mechanism of ZBLAN glass codoped with Yb3+ and Er3+, as fast-excitation diffusion among donors, followed by direct energy transfer, was also observed.

© 2005 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(300.2140) Spectroscopy : Emission

Citation
Luciana R. P. Kassab, Marcos E. Fukumoto, and Laércio Gomes, "Energy transfer in PbO-Bi2O3-Ga2O3 glasses codoped with Yb3+ and Er3+," J. Opt. Soc. Am. B 22, 1255-1259 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-6-1255


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