Intense near-infrared emission of 1.23 μm in erbium-doped low-phonon-energy fluorotellurite glass

Bo Zhou, Lili Tao, Clarence Yat-Yin Chan, Yuen Hong Tsang, Wei Jin, Edwin Yue Bun Pun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


Intense near-infrared emission located at 1.23 μm wavelength originating from the erbium (Er3+):4S3/2→4I11/2transition is observed in Er3+-doped fluorotellurite glasses. This emission is mainly contributed by the relatively low phonon energy of the fluorotellurite glass host (∼776 cm-1). Judd-Ofelt analysis indicates a strong asymmetry and covalent environment between Er3+ions and ligands in the host matrix. The emission cross-section was calculated to be 2.85 × 10-21cm2by the Füchtbauer-Ladenburg equation, and the population inversion is realized according to a simplified evaluation. The results suggest that the fluorotellurite glass system could be a promising candidate for the development of optical amplifiers and lasers operating at the relatively unexplored 1.2 μm wavelength region.
Original languageEnglish
Pages (from-to)49-53
Number of pages5
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Publication statusPublished - 1 Jul 2013


  • Fluorotellurite glass
  • Low phonon energy
  • Population inversion

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy


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