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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 22 — Nov. 15, 2013
  • pp: 4667–4670

Resonant excited state absorption and relaxation mechanisms in Tb3+-doped calcium aluminosilicate glasses: an investigation by thermal mirror spectroscopy

G. S. Bianchi, V. S. Zanuto, F. B. G. Astrath, L. C. Malacarne, I. A. A. Terra, T. Catunda, L. A. O. Nunes, C. Jacinto, L. H. C. Andrade, S. M. Lima, M. L. Baesso, and N. G. C. Astrath  »View Author Affiliations


Optics Letters, Vol. 38, Issue 22, pp. 4667-4670 (2013)
http://dx.doi.org/10.1364/OL.38.004667


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Abstract

Resonant excited state absorption (ESA) and relaxation processes in Tb3+-doped aluminosilicate glasses are quantitatively evaluated. A model describing the excitation steps and upconversion emission is developed and applied to interpret the results from laser-induced surface deformation using thermal mirror spectroscopy. The fluorescence quantum efficiency of level D54 was found to be close to unity and concentration independent while, for the level D53, it decreases with Tb3+ concentration. Emission spectroscopy measurements supported these results. ESA cross sections are found to be more than three orders of magnitude higher than the ground state absorption cross section.

© 2013 Optical Society of America

OCIS Codes
(300.6430) Spectroscopy : Spectroscopy, photothermal
(350.5340) Other areas of optics : Photothermal effects

ToC Category:
Spectroscopy

History
Original Manuscript: August 7, 2013
Revised Manuscript: October 1, 2013
Manuscript Accepted: October 2, 2013
Published: November 8, 2013

Citation
G. S. Bianchi, V. S. Zanuto, F. B. G. Astrath, L. C. Malacarne, I. A. A. Terra, T. Catunda, L. A. O. Nunes, C. Jacinto, L. H. C. Andrade, S. M. Lima, M. L. Baesso, and N. G. C. Astrath, "Resonant excited state absorption and relaxation mechanisms in Tb3+-doped calcium aluminosilicate glasses: an investigation by thermal mirror spectroscopy," Opt. Lett. 38, 4667-4670 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-22-4667

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