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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: 2921–2926

Spectroscopic properties of lead fluoroborate glasses codoped with Er3+ and Yb3+

Luciana Reyes Pires Kassab, Lilia Coronato Courrol, Alessandro Santos Morais, Sonia Hatsue Tatumi, Niklaus Ursus Wetter, and Laércio Gomes  »View Author Affiliations


JOSA B, Vol. 19, Issue 12, pp. 2921-2926 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002921


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Abstract

Energy transfer at 1500 nm in lead fluoroborate glasses (PbO–PbF2–B2O3) codoped with Er3+ and Yb3+ is studied for the first time to the authors’ knowledge. A sample codoped with 1 mol. % of Yb2O3 and 0.01 mol. % of Er2O3 has a measured fluorescence lifetime of (1.30±0.07) ms and an energy transfer efficiency of 80%. Also, a large emission band, of 72.4 nm has a measured peak emission cross section of (0.73±0.06)×10−20cm2. The calculated Judd–Ofelt parameters are Ω2=(3.51±0.14)×10−20 cm2, Ω4=(1.09±0.07)× 10−20 cm2, and Ω6=(0.94±0.07)×10−20 cm2. The temporal evolution of the Yb3+ fluorescence is fitted by use of the Yokota–Tanimoto expression to yield the Yb3+ diffusion constant [(1.6±0.2)×10−10 cm2 s−1] and the critical radius of Yb3+/Er3+ (18±1)×10−8 cm. Results with the singly doped samples produced are presented to clarify the energy transfer process.

© 2002 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(160.2750) Materials : Glass and other amorphous materials
(160.3380) Materials : Laser materials
(160.4760) Materials : Optical properties
(160.5690) Materials : Rare-earth-doped materials

Citation
Luciana Reyes Pires Kassab, Lilia Coronato Courrol, Alessandro Santos Morais, Sonia Hatsue Tatumi, Niklaus Ursus Wetter, and Laércio Gomes, "Spectroscopic properties of lead fluoroborate glasses codoped with Er3+ and Yb3+," J. Opt. Soc. Am. B 19, 2921-2926 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-12-2921

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