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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 23 — Dec. 1, 2008
  • pp: 2858–2860

Cooperative downconversion in Yb 3 + RE 3 + ( RE = Tm or Pr) codoped lanthanum borogermanate glasses

Xiaofeng Liu, Yanbo Qiao, Guoping Dong, Song Ye, Bin Zhu, Gandham Lakshminarayana, Danping Chen, and Jianrong Qiu  »View Author Affiliations


Optics Letters, Vol. 33, Issue 23, pp. 2858-2860 (2008)
http://dx.doi.org/10.1364/OL.33.002858


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Abstract

We report on cooperative downconversion in Yb 3 + RE 3 + ( RE = Tm or Pr) codoped lanthanum borogermanate glasses (LBG), which are capable of splitting a visible photon absorbed by Tm 3 + or Pr 3 + ions into two near-infrared photons. The results indicate that Pr 3 + Yb 3 + is a more efficient ion couple than Tm 3 + Yb 3 + in terms of cooperative downconversion. We have obtained a highest quantum yield of 165% and 138% for Pr 3 + Yb 3 + and Tm 3 + Yb 3 + codoped LBG glasses under 468 nm excitation, respectively. However, ultraviolet light excitation to the charge transfer band of Yb 3 + does not result in quantum splitting as rapid relaxation from the charge transfer band to 4 f 13 levels of Yb 3 + dominates.

© 2008 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.2750) Materials : Glass and other amorphous materials
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Spectroscopy

History
Original Manuscript: August 21, 2008
Revised Manuscript: October 25, 2008
Manuscript Accepted: October 27, 2008
Published: November 25, 2008

Citation
Xiaofeng Liu, Yanbo Qiao, Guoping Dong, Song Ye, Bin Zhu, Gandham Lakshminarayana, Danping Chen, and Jianrong Qiu, "Cooperative downconversion in Yb3+–RE3+ (RE=Tm or Pr) codoped lanthanum borogermanate glasses," Opt. Lett. 33, 2858-2860 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-23-2858

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