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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 12 — Dec. 2, 2002
  • pp: 2927–2937

Measurements of the spectroscopic and energy transfer parameters for Er3+-doped and Er3+, Pr3+-codoped PbO–Bi2O3–Ga2O3 glasses

Daniel J. Coleman, Stuart D. Jackson, Paul Golding, and Terence A. King  »View Author Affiliations


JOSA B, Vol. 19, Issue 12, pp. 2927-2937 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002927


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Abstract

Measurements of the absorption and emission spectra and the characteristics of the luminescent decay of the <sup>4</sup>I<sub>11/2</sub> and <sup>4</sup>I<sub>13/2</sub> energy levels of Er<sup>3+</sup> are presented for Er<sup>3+</sup> singly doped and Er<sup>3+</sup>, Pr<sup>3+</sup>-codoped PbO–Bi<sub>2</sub>O<sub>3</sub>–Ga<sub>2</sub>O<sub>3</sub> (PBG) glasses. The absorption cross sections were determined after accurate measurement both of glass component concentrations by use of electron probe analysis and of glass density. The characteristics of the luminescent decays were determined after direct pumping of the <sup>4</sup>I<sub>11/2</sub> and <sup>4</sup>I<sub>13/2</sub> energy levels of singly doped Er<sup>3+</sup> PBG glass with a tunable pulsed optical parametric oscillator for calculation of the macroscopic rate parameters (W<sub>ETU</sub>) for energy transfer upconversion (ETU) for these energy levels. The values for W<sub>ETU</sub> relevant to the <sup>4</sup>I<sub>11/2</sub> energy level were measured to be greater than the W<sub>ETU</sub> values relevant to the <sup>4</sup>I<sub>13/2</sub> energy level within the range of Er<sup>3+</sup> concentrations studied. The macroscopic rate parameter (W<sub>Er-Pr</sub>) for energy transfer to the Pr<sup>3+</sup> deactivator ion from the <sup>4</sup>I<sub>13/2</sub> energy level was also determined for a range of Pr<sup>3+</sup> concentrations and for two fixed Er<sup>3+</sup> concentrations. From a measurement of the energy-level lifetimes it was established that the rate of energy transfer from the <sup>4</sup>I<sub>13/2</sub> energy level to Pr<sup>3+</sup> is greater than the corresponding rate of energy transfer from the <sup>4</sup>I<sub>11/2</sub> level to both the Pr<sup>3+</sup> ion and the OH impurity. The overall results suggest that, to maximize the population inversion on the <sup>4</sup>I<sub>11/2</sub>→<sup>4</sup>I<sub>13/2</sub>∼3 μm transition, deactivation of the <sup>4</sup>I<sub>13/2</sub> level by way of small amounts of Pr<sup>3+</sup> will be effective.

© 2002 Optical Society of America

OCIS Codes
(060.2290) Fiber optics and optical communications : Fiber materials
(140.3510) Lasers and laser optics : Lasers, fiber
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

Citation
Daniel J. Coleman, Stuart D. Jackson, Paul Golding, and Terence A. King, "Measurements of the spectroscopic and energy transfer parameters for Er3+-doped and Er3+, Pr3+-codoped PbO–Bi2O3–Ga2O3 glasses," J. Opt. Soc. Am. B 19, 2927-2937 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-12-2927

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