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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 15 — Jul. 23, 2007
  • pp: 9232–9238

Thermal lens study of energy transfer in Yb3+/Tm3+-co-doped glasses

C. Jacinto, M. V. D. Vermelho, M. T. de Araujo, P. T. Udo, N. G. C. Astrath, A. C. Bento, T. Catunda, and M. L. Baesso  »View Author Affiliations

Optics Express, Vol. 15, Issue 15, pp. 9232-9238 (2007)

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Energy transfer (ET) and heat generation processes in Yb3+/Tm3+-co-doped low-silica calcium-aluminosilicate glasses were investigated using thermal lens and photoluminescence measurements. Stepwise ET processes from Yb3+ to Tm3+, with excitation at 0.976µm, produced efficient emission in the mid-infrared range at around 1.8µm, with high fluorescence quantum efficiency (~0.50) and relatively low thermal loading (≤0.42). An equation was deduced for the description of the thermal lens results which provided the absolute value of the ET efficiency and optimal Tm3+ concentration that result in population of the 1.8µm Tm3+ emitting level. These results suggest that the studied co-doped system would be a promising candidate for the construction of high-power diode-pumped solid-state lasers in the mid-infrared range, which are especially important for the purpose of medical procedures.

© 2007 Optical Society of America

OCIS Codes
(140.6810) Lasers and laser optics : Thermal effects
(160.3380) Materials : Laser materials
(160.4760) Materials : Optical properties

ToC Category:

Original Manuscript: April 26, 2007
Revised Manuscript: June 18, 2007
Manuscript Accepted: July 3, 2007
Published: July 12, 2007

Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics

C. Jacinto, Marcos V. Vermelho, M. T. de Araujo, P. T. Udo, N. G. Astrath, A. C. Bento, T. Catunda, and M. L. Baesso, "Thermal lens study of energy transfer in Yb3+/Tm3+-co-doped glasses," Opt. Express 15, 9232-9238 (2007)

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Fig. 1. Fig. 2.(a)

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