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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 195–202

Accurate efficiency evaluation of energy-transfer processes in phosphosilicate Er 3 + Yb 3 + -codoped fibers

Mathieu Laroche, Sylvain Girard, Jayanta K. Sahu, W. Andrew Clarkson, and Johan Nilsson  »View Author Affiliations


JOSA B, Vol. 23, Issue 2, pp. 195-202 (2006)
http://dx.doi.org/10.1364/JOSAB.23.000195


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Abstract

A new approach for the prediction of energy-transfer efficiencies in codoped Er–Yb double-clad fiber (EYDCF) is presented. Ab initio calculations have been performed on the basis of migration-assisted energy-transfer models. The two main Yb 3 + -to- Er 3 + energy transfers as well as the Er 3 + cooperative upconversion were theoretically estimated, and the results indicate that the secondary energy-transfer parameter is more efficient than the upconversion process. Theoretical calculations were found to be consistent with experimental energy-transfer parameters recorded in various fiber samples. We show that the first Yb 3 + -to- Er 3 + energy-transfer parameter that is needed in all modelings based on rate equations can be calculated by use of a simple relation. Our approach also permits the prediction of the laser efficiency of EYDCFs, and a comparison of measured and calculated maximum laser slope efficiency shows a good agreement.

© 2006 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 14, 2005
Revised Manuscript: July 15, 2005
Manuscript Accepted: September 7, 2005

Citation
Mathieu Laroche, Sylvain Girard, Jayanta K. Sahu, W. Andrew Clarkson, and Johan Nilsson, "Accurate efficiency evaluation of energy-transfer processes in phosphosilicate Er3+-Yb3+-codoped fibers," J. Opt. Soc. Am. B 23, 195-202 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-2-195

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