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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 3 — Mar. 1, 2014
  • pp: 429–435

Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses

Laércio Gomes, Joris Lousteau, Daniel Milanese, Emanuele Mura, and Stuart D. Jackson  »View Author Affiliations


JOSA B, Vol. 31, Issue 3, pp. 429-435 (2014)
http://dx.doi.org/10.1364/JOSAB.31.000429


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Abstract

The decay processes relating to the potential H613/2H615/2 laser transition for 2.9 μm emission in single Dy3+-doped tellurite (TZNF and TZN) glasses have been investigated in detail using time-resolved fluorescence spectroscopy. The selective laser excitation of the F65/2 and H69/2, F611/2 energy levels at 805 and 1300 nm, respectively, have established that the decay processes of the lowest excited level (i.e., H613/2) entirely favors multiphonon emission in a tellurite glass host. Detailed investigation of the H613/2 luminescence decay characteristic revealed that two decay constants are involved in the TZNF glass composition; approximately 90% of the decay has a time constant (τ1) of 19.6 μs. The remaining centers decay with a time constant τ2=112μs due to the Dy3+ fluorine bonds, which are possibly present in the TZNF glass matrix. Slight quenching of τ1 for Dy3+ concentration increases to 2 mol. % may indicate energy transfer to OH molecules in the TZNF glass despite the low OH content, [α(OH)0.04cm1]; further decrease of τ1 (to 9.7 μs) was measured in TZN glass matrix, which is commensurate with the higher OH density (α=0.15cm1).

© 2014 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.3510) Lasers and laser optics : Lasers, fiber
(300.6360) Spectroscopy : Spectroscopy, laser
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Spectroscopy

History
Original Manuscript: October 15, 2013
Revised Manuscript: December 17, 2013
Manuscript Accepted: December 21, 2013
Published: February 5, 2014

Citation
Laércio Gomes, Joris Lousteau, Daniel Milanese, Emanuele Mura, and Stuart D. Jackson, "Spectroscopy of mid-infrared (2.9 μm) fluorescence and energy transfer in Dy3+-doped tellurite glasses," J. Opt. Soc. Am. B 31, 429-435 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-3-429

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