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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 11 — May. 26, 2008
  • pp: 7709–7714

Excitation diffusion in GeGaSe and GeGaS glasses heavily doped with Er3+

Cyril Koughia and Safa O. Kasap  »View Author Affiliations

Optics Express, Vol. 16, Issue 11, pp. 7709-7714 (2008)

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Using the photoluminescence from GeGaSe:Er to pump GeGaS:Er, we examine the efficiency of light trapping. By measuring the photoluminescence decay time in powdered materials with varying particle size, we are able to exclude the influence of light trapping and to pinpoint the effect of self-quenching. The critical concentrations of Er for efficient self-quenching are determined by fitting experimental data to existing models. These values are found to be much larger than the concentrations inducing the formation of Er-clusters.

© 2008 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(260.3800) Physical optics : Luminescence

ToC Category:

Original Manuscript: February 28, 2008
Revised Manuscript: May 5, 2008
Manuscript Accepted: May 8, 2008
Published: May 13, 2008

Cyril Koughia and Safa O. Kasap, "Excitation diffusion in GeGaSe and GeGaS glasses heavily doped with Er3+," Opt. Express 16, 7709-7714 (2008)

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