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Proceedings Paper

Effects in the population inversion of 3H4 level in Tm, Tm-Tb, and Tm-Eu doped germanate glasses for amplifiers applications
Author(s): A. F. H. Librantz; L. Gomes; G. Pairier; S. J. L. Ribeiro; Y. Messaddeq
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Paper Abstract

The population inversion of the Tm3+ in GLKZ glass involved in the 1470 nm emission (3H4-> 3F4) as a function of Tb (or Eu) concentration was calculated by computational simulation for a CW laser pumping at 792 nm. These calculations were performed using the experimental Tm->Tb an Tm->Eu transfer rates and the spectroscopic parameters of the Tm (0.1 mol%) system. The result shows that 0.2 mol% (Tb3+) and 0.4 mol % of Eu3+ ions propitiate best population inversion of Tm3+ (0.1 mol %) maximizing the amplification coefficient of germanate (GLKZ) glass when operating as laser intensity amplification at 1470 nm. Besides the effective deactivation of the 3F4 level, the presence of Tb3+ or Eu3+ ions introduce a depopulation of the 3H4 emitting level by means of a cross relaxation process with Tm3+ ions. In spite of this, the whole effect is verified to be benefic for using Tm-doped GLKZ glass codoped with Tb3+ or Eu3+ as a suitable material for confectioning optical amplifiers that operates in the S-band for telecommunication. PACS code: 78.50, 78.55, 71.55

Paper Details

Date Published: 17 April 2006
PDF: 9 pages
Proc. SPIE 6190, Solid State Lasers and Amplifiers II, 61901G (17 April 2006); doi: 10.1117/12.684771
Show Author Affiliations
A. F. H. Librantz, Cidade Univ. (Brazil)
L. Gomes, Cidade Univ. (Brazil)
G. Pairier, Lab. de Materiais Fotônicos, UNESP (Brazil)
S. J. L. Ribeiro, Lab. de Materiais Fotônicos, UNESP (Brazil)
Y. Messaddeq, Lab. de Materiais Fotônicos, UNESP (Brazil)

Published in SPIE Proceedings Vol. 6190:
Solid State Lasers and Amplifiers II
Alphan Sennaroglu, Editor(s)

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