Cooperative upconversion and energy transfer of new high Er3+- and Yb3+-Er3+-doped phosphate glasses

Bor Chyuan Hwang, Shibin Jiang, Tao Luo, Jason Watson, Gino Sorbello, Nasser N Peyghambarian

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174 Citations (Scopus)

Abstract

Systematic studies of cooperative upconversion and Yb3+-Er 3+ energy transfer in newly developed phosphate glasses were performed by a rate-equation formalism. The cooperative-upconversion coefficients of the 4I13/12 level for different Er 3+ concentrations were determined from the luminescence-decay curves for high pump intensities. A small cooperative-upconversion coefficient of 1.1 × 10-18cm3/s was obtained for a high Er 3+ concentration of 4 × 1020 ions/cm3. Yb3+-Er3+ energy-transfer coefficients for an Er 3+ concentration of 2 × 1020 ions/cm3 codoped with different Yb3+ concentrations were calculated from the lifetime measurements of the 2F5/2 level of Yb 3+ ions. For Er3+ codoped with an Yb3+ concentration of 6 × 1020 ions/cm3, an energy-transfer coefficient of 1.1 × 10-16 cm3/s and an energy-transfer efficiency higher than 95% were determined from our measurements under weak excitation. The cooperative-upconversion coefficients of Yb3+-Er3+-doped samples were found to be consistent with that of an Er3+-doped sample with the same Er3+ concentration. The weak cooperative-upconversion effect of high Er3+ concentrations and efficient Yb3+-Er3+ energy transfer indicate that these newly developed Er3+- and Yb3+-Er 3+-doped phosphate glasses are excellent for active device applications.

Original languageEnglish (US)
Pages (from-to)833-839
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Volume17
Issue number5
StatePublished - 2000

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phosphates
energy transfer
glass
coefficients
ions
luminescence
pumps
formalism
life (durability)
decay
curves
excitation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Cooperative upconversion and energy transfer of new high Er3+- and Yb3+-Er3+-doped phosphate glasses. / Hwang, Bor Chyuan; Jiang, Shibin; Luo, Tao; Watson, Jason; Sorbello, Gino; Peyghambarian, Nasser N.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 17, No. 5, 2000, p. 833-839.

Research output: Contribution to journalArticle

Hwang, Bor Chyuan ; Jiang, Shibin ; Luo, Tao ; Watson, Jason ; Sorbello, Gino ; Peyghambarian, Nasser N. / Cooperative upconversion and energy transfer of new high Er3+- and Yb3+-Er3+-doped phosphate glasses. In: Journal of the Optical Society of America B: Optical Physics. 2000 ; Vol. 17, No. 5. pp. 833-839.
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AU - Peyghambarian, Nasser N

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