Cooperative upconversion in a new high Er-doped tellurite glass

Yongdan Hu, Shibin Jiang, Gino Sorbello, Tao Luo, Yong Ding, Bor Chyuan Hwang, Jung Hwan Kim, Hyo Jin Seo, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A model for population dynamics of Er3+ in tellurite glasses with high erbium concentrations is proposed. Luminescence decay curves from transitions of 4I13/24I15/2 and 4S3/24I15/2 were measured experimentally. Cooperative upconversion coefficients were obtained by numerically solving the rate equations of the model to fit the population dynamics of the 4I13/2 and 4S3/2 levels. The cooperative upconversion coefficient for 4I13/2+4I13/24I9/2+4I15/2 is found to be 2.74×10-18 cm3/s and for 4I11/2+4I11/24I15/2+2F7/2 is 1.09×10-18 cm3/s. The model provides a good basis for explaining the experiment data as it shows a high sensitivity to the input fitting parameters. This model can be used to analyze spectroscopic properties of Er3+ ions in glass hosts where various energy levels of Er3+ and transitions between them cannot be neglected.

Original languageEnglish (US)
Pages (from-to)57-74
Number of pages18
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4282
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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