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Superbroadband near-infrared emission and energy transfer in Pr 3+-Er3+ codoped fluorotellurite glasses

  • Bo Zhou*
  • , Lili Tao
  • , Yuen H. Tsang
  • , Wei Jin
  • , Edwin Yue Bun Pun
  • *Corresponding author for this work
  • Hong Kong Polytechnic University
  • City University of Hong Kong

Research output: Contribution to journalArticlepeer-review

Abstract

We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr3+)-erbium(Er3+) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr3+: 1D 21G4 and Er3+: 4I13/24I15/2 transitions which lead to emissions located at 1.48 and 1.53 μm, respectively. The quenching of the Pr3+ emission resulted from the cross relaxation [ 1D2, 3H4]→[1G 4, 3F3,4] was effectively compensated by the codoping of Er3+. The results suggest that, other than the heavy-metal and transition-metal elements of active bismuth (Bi), nickel (Ni), chromium (Cr), etc., Pr3+-Er3+ codoped system is a promising alternative for the broadband near-infrared emission covering the expanded low-loss window.

Original languageEnglish
Pages (from-to)12205-12211
Number of pages7
JournalOptics Express
Volume20
Issue number11
DOIs
StatePublished - 21 May 2012
Externally publishedYes

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