Infrared radiation properties of Ho3+ in multicomponent germanium tellurite glasses

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)5976-5982
Journal / PublicationApplied Optics
Volume54
Issue number19
Online published4 Jun 2015
Publication statusPublished - 1 Jul 2015

Abstract

Ho3+-doped and Ho3+/Yb3+-codoped multicomponent germanium tellurite (MGT) glasses with multifarious emission channels in the near-infrared wavelength region have been fabricated and characterized. Judd-Ofelt intensity parameters of Ho3+-doped MGT glasses are solved to be Ω= 5.32 × 10-20 cm2, Ω4 = 2.73 × 10-20 cm2, and Ω6 = 1.12 × 10-20 cm2, indicating a higher asymmetric and stronger covalent environment around Ho3+ ions in MGT glasses. Efficient infrared fluorescences have been observed in MGT glasses, and spontaneous emission probabilities are derived to be 230.4, 79.9, and 138.3 s-1 for the 5I65I8, (5F4,5S2) → 5I5, and 5I75I8 radiative transitions, respectively. In Ho3+/Yb3+-codoped MGT glasses, the maximum stimulated emission cross-section of 2.0 μm emission is calculated to be 4.93 × 10-21 cm2, and the corresponding gain cross-section is derived to be 3.62 × 10-21 cm2 when the excited state population fraction P reaches 0.8. Multifarious infrared emissions show that Ho3+ in MGT glasses is a good candidate for optical amplifiers and optoelectronic devices.

Research Area(s)

  • Rare-earth-doped material, Spectroscopy, infrared, Spectroscopy, fluorescence and luminescence

Citation Format(s)

Infrared radiation properties of Ho3+ in multicomponent germanium tellurite glasses. / SUI, Z. Q.; CHEN, B. J.; PUN, E. Y. B.; LIN, H.

In: Applied Optics, Vol. 54, No. 19, 01.07.2015, p. 5976-5982.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review