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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 9 — Mar. 20, 2010
  • pp: 1671–1675

Intense green upconversion emission in Tb 3 + / Yb 3 + codoped alumino-germano-silicate optical fibers

Aoxiang Lin, Xueming Liu, Pramod R. Watekar, Haitao Guo, Bo Peng, Wei Wei, Min Lu, Won-Taek Han, and Jean Toulouse  »View Author Affiliations


Applied Optics, Vol. 49, Issue 9, pp. 1671-1675 (2010)
http://dx.doi.org/10.1364/AO.49.001671


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Abstract

We observed intense green upconversion emission from Tb 3 + centered at 546 nm due to transition D 4 5 F 5 7 in Tb 3 + / Yb 3 + codoped alumino-germano-silicate optical fibers by direct excitation of Yb 3 + ions with a laser diode at 976 nm . A two-photon cooperative energy transfer upconversion among a pair of Yb 3 + donor ions and a Tb 3 + acceptor ion are responsible for the observed green emission. Appropriately increasing the concentration of Tb 3 + relative to Yb 3 + was found to facilitate the energy transfer upconversion process from Yb 3 + to Tb 3 + , while an excess of Tb 3 + ions inversely introduced more of the concentration quenching effect and phonon-assistant backward energy transfer from Tb 3 + to Yb 3 + and, therefore, damaged the observed green emission. The intensity of the observed green emission was found optimum for a concentration ratio of Tb 3 + to Yb 3 + of 2 : 1 in alumino-germano-silicate optical glass fibers.

© 2010 Optical Society of America

OCIS Codes
(060.2290) Fiber optics and optical communications : Fiber materials
(140.7300) Lasers and laser optics : Visible lasers
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 6, 2010
Revised Manuscript: March 1, 2010
Manuscript Accepted: March 1, 2010
Published: March 17, 2010

Citation
Aoxiang Lin, Xueming Liu, Pramod R. Watekar, Haitao Guo, Bo Peng, Wei Wei, Min Lu, Won-Taek Han, and Jean Toulouse, "Intense green upconversion emission in Tb3+/Yb3+ codoped alumino-germano-silicate optical fibers," Appl. Opt. 49, 1671-1675 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-9-1671

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