Spectroscopic properties and external quantum yield of Sm3+ doped germanotellurite glasses

F. Wang; B. J. Chen; H. Lin; E. Y B Pun

doi:10.1016/j.jqsrt.2014.05.014

Spectroscopic properties and external quantum yield of Sm³⁺ doped germanotellurite glasses

F. Wang, B. J. Chen, H. Lin, E. Y B Pun

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

32 Citations (Scopus)

Abstract

Sm³⁺ doped germanotellurite glasses (NZPGT) with maximum phonon energy of 793cm^-1 have been prepared and characterized. Judd-Ofelt parameters Ω_t (t=2, 4, 6) have been calculated to be 3.52×10^-20, 4.70×10^-20 and 1.90×10^-20cm², respectively. Large value of Ω₂ indicates a high asymmetry and covalent environment around Sm³⁺ in the glass system. The maximum stimulated emission cross-section of the dominant transition ⁴G_5/2→⁶H_9/2 peaking at 645.0nm was derived to be 10.00×10^-22cm², predicting that the red fluorescence emission can be efficiently extracted from the optical glasses. The internal quantum efficiency and external quantum yield of 0.4wt% Sm₂O₃ doped NZPGT glasses were deduced to be 82.5% and 6.0%, respectively. The results demonstrate that Sm³⁺ doped NZPGT glasses are a potential candidate for developing tunable visible lasers, compact light sources and solid-state display devices. © 2014 Elsevier Ltd.

Original language	English
Pages (from-to)	63-70
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	147
Online published	27 May 2014
DOIs	https://doi.org/10.1016/j.jqsrt.2014.05.014
Publication status	Published - Nov 2014

Research Keywords

External quantum yield
Germanotellurite glasses
J-O intensity parameters

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title = "Spectroscopic properties and external quantum yield of Sm3+ doped germanotellurite glasses",

abstract = "Sm3+ doped germanotellurite glasses (NZPGT) with maximum phonon energy of 793cm-1 have been prepared and characterized. Judd-Ofelt parameters Ωt (t=2, 4, 6) have been calculated to be 3.52×10-20, 4.70×10-20 and 1.90×10-20cm2, respectively. Large value of Ω2 indicates a high asymmetry and covalent environment around Sm3+ in the glass system. The maximum stimulated emission cross-section of the dominant transition 4G5/2→6H9/2 peaking at 645.0nm was derived to be 10.00×10-22cm2, predicting that the red fluorescence emission can be efficiently extracted from the optical glasses. The internal quantum efficiency and external quantum yield of 0.4wt% Sm2O3 doped NZPGT glasses were deduced to be 82.5% and 6.0%, respectively. The results demonstrate that Sm3+ doped NZPGT glasses are a potential candidate for developing tunable visible lasers, compact light sources and solid-state display devices. {\textcopyright} 2014 Elsevier Ltd.",

keywords = "External quantum yield, Germanotellurite glasses, J-O intensity parameters",

author = "F. Wang and Chen, {B. J.} and H. Lin and Pun, {E. Y B}",

year = "2014",

month = nov,

doi = "10.1016/j.jqsrt.2014.05.014",

language = "English",

volume = "147",

pages = "63--70",

journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

issn = "0022-4073",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Spectroscopic properties and external quantum yield of Sm3+ doped germanotellurite glasses

AU - Wang, F.

AU - Chen, B. J.

AU - Lin, H.

AU - Pun, E. Y B

PY - 2014/11

Y1 - 2014/11

N2 - Sm3+ doped germanotellurite glasses (NZPGT) with maximum phonon energy of 793cm-1 have been prepared and characterized. Judd-Ofelt parameters Ωt (t=2, 4, 6) have been calculated to be 3.52×10-20, 4.70×10-20 and 1.90×10-20cm2, respectively. Large value of Ω2 indicates a high asymmetry and covalent environment around Sm3+ in the glass system. The maximum stimulated emission cross-section of the dominant transition 4G5/2→6H9/2 peaking at 645.0nm was derived to be 10.00×10-22cm2, predicting that the red fluorescence emission can be efficiently extracted from the optical glasses. The internal quantum efficiency and external quantum yield of 0.4wt% Sm2O3 doped NZPGT glasses were deduced to be 82.5% and 6.0%, respectively. The results demonstrate that Sm3+ doped NZPGT glasses are a potential candidate for developing tunable visible lasers, compact light sources and solid-state display devices. © 2014 Elsevier Ltd.

AB - Sm3+ doped germanotellurite glasses (NZPGT) with maximum phonon energy of 793cm-1 have been prepared and characterized. Judd-Ofelt parameters Ωt (t=2, 4, 6) have been calculated to be 3.52×10-20, 4.70×10-20 and 1.90×10-20cm2, respectively. Large value of Ω2 indicates a high asymmetry and covalent environment around Sm3+ in the glass system. The maximum stimulated emission cross-section of the dominant transition 4G5/2→6H9/2 peaking at 645.0nm was derived to be 10.00×10-22cm2, predicting that the red fluorescence emission can be efficiently extracted from the optical glasses. The internal quantum efficiency and external quantum yield of 0.4wt% Sm2O3 doped NZPGT glasses were deduced to be 82.5% and 6.0%, respectively. The results demonstrate that Sm3+ doped NZPGT glasses are a potential candidate for developing tunable visible lasers, compact light sources and solid-state display devices. © 2014 Elsevier Ltd.

KW - External quantum yield

KW - Germanotellurite glasses

KW - J-O intensity parameters

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U2 - 10.1016/j.jqsrt.2014.05.014

DO - 10.1016/j.jqsrt.2014.05.014

M3 - RGC 21 - Publication in refereed journal

SN - 0022-4073

VL - 147

SP - 63

EP - 70

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

ER -