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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 7 — Apr. 1, 2008
  • pp: 693–695

Enhanced green upconversion emission of Er 3 + through energy transfer by Dy 3 + under 800 nm femtosecond-laser excitation

Ai-Hua Li, Qiang Lü, Zhi-Ren Zheng, Liang Sun, Wen-Zhi Wu, Wei-Long Liu, Heng-Zhi Chen, Yan-Qiang Yang, and Tian-Quan Lü  »View Author Affiliations


Optics Letters, Vol. 33, Issue 7, pp. 693-695 (2008)
http://dx.doi.org/10.1364/OL.33.000693


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Abstract

Er 3 + green upconversion (UC) emission corresponding to the transition of S 3 2 4 ( H 11 2 2 ) I 15 2 4 is enhanced in a Er Dy -codoped Li Nb O 3 crystal compared with Er-doped Li Nb O 3 under 800 nm femtosecond-laser excitation at room temperature. The upconversion mechanisms are proposed based on spectral, kinetic, and pump-power dependence analyses. The energy-transfer efficiency from Dy 3 + ( F 9 2 4 ) to Er 3 + ( F 7 2 4 ) is 33%, which results in the enhancement of green UC emission. This energy transfer is advantageous for the Er 3 + UC emission sensitized by Dy 3 + , especially in a low-phonon-energy host matrix.

© 2008 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.5690) Materials : Rare-earth-doped materials
(190.7220) Nonlinear optics : Upconversion
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Nonlinear Optics

History
Original Manuscript: December 5, 2007
Revised Manuscript: February 24, 2008
Manuscript Accepted: February 28, 2008
Published: March 28, 2008

Citation
Ai-Hua Li, Qiang Lü, Zhi-Ren Zheng, Liang Sun, Wen-Zhi Wu, Wei-Long Liu, Heng-Zhi Chen, Yan-Qiang Yang, and Tian-Quan Lü, "Enhanced green upconversion emission of Er3+ through energy transfer by Dy3+ under 800 nm femtosecond-laser excitation," Opt. Lett. 33, 693-695 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-7-693


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