Fluorescence investigation of Ho3+ in Yb3+ sensitized mixed-alkali bismuth gallate glasses

H. Lin; Y. Y. Zhang; E. Y B Pun

doi:10.1016/j.saa.2008.05.019

Fluorescence investigation of Ho³⁺ in Yb³⁺ sensitized mixed-alkali bismuth gallate glasses

H. Lin, Y. Y. Zhang, E. Y B Pun

Department of Electrical Engineering

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

28 Citations (Scopus)

Abstract

Efficient 2.0 μm infrared and visible upconversion emissions have been observed in Ho³⁺/Yb³⁺ co-doped mixed-alkali bismuth gallate (LKBBG) glasses having a maximum-phonon energy of 673 cm^-1. The Judd-Ofelt parameters Ω₂, Ω₄ and Ω₆ of Ho³⁺ indicate that there is a high asymmetry and strong covalent environment in LKBBG glasses. The large absorption and emission cross-sections of Yb³⁺ confirm that it is a suitable sensitizer for capturing and transferring pump energy to Ho³⁺. The emission cross-section profile for the ⁵I₇ →⁵I₈ transition is derived using the reciprocity method and the peak value is 5.54 × 10^-21 cm², which is much larger than the value in fluorozircoaluminate glasses. LKBBG glasses exhibit low maximum-phonon energy and large refractive index, and it is possible to achieve an effective 1.66 μm U-band emission of Ho³⁺ under 900nm laser radiation. © 2008 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1547-1550
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	71
Issue number	4
DOIs	https://doi.org/10.1016/j.saa.2008.05.019
Publication status	Published - 15 Dec 2008

Research Keywords

Ho3+/Yb3+
Infrared and upconversion emission
Mixed-alkali bismuth gallate glasses
Radiative parameters

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@article{b57f98ed32924d9d905142b3b795b363,

title = "Fluorescence investigation of Ho3+ in Yb3+ sensitized mixed-alkali bismuth gallate glasses",

abstract = "Efficient 2.0 μm infrared and visible upconversion emissions have been observed in Ho3+/Yb3+ co-doped mixed-alkali bismuth gallate (LKBBG) glasses having a maximum-phonon energy of 673 cm-1. The Judd-Ofelt parameters Ω2, Ω4 and Ω6 of Ho3+ indicate that there is a high asymmetry and strong covalent environment in LKBBG glasses. The large absorption and emission cross-sections of Yb3+ confirm that it is a suitable sensitizer for capturing and transferring pump energy to Ho3+. The emission cross-section profile for the 5I7 → 5I8 transition is derived using the reciprocity method and the peak value is 5.54 × 10-21 cm2, which is much larger than the value in fluorozircoaluminate glasses. LKBBG glasses exhibit low maximum-phonon energy and large refractive index, and it is possible to achieve an effective 1.66 μm U-band emission of Ho3+ under 900nm laser radiation. {\textcopyright} 2008 Elsevier B.V. All rights reserved.",

keywords = "Ho3+/Yb3+, Infrared and upconversion emission, Mixed-alkali bismuth gallate glasses, Radiative parameters",

author = "H. Lin and Zhang, {Y. Y.} and Pun, {E. Y B}",

year = "2008",

month = dec,

day = "15",

doi = "10.1016/j.saa.2008.05.019",

language = "English",

volume = "71",

pages = "1547--1550",

journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",

issn = "1386-1425",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Fluorescence investigation of Ho3+ in Yb3+ sensitized mixed-alkali bismuth gallate glasses

AU - Lin, H.

AU - Zhang, Y. Y.

AU - Pun, E. Y B

PY - 2008/12/15

Y1 - 2008/12/15

N2 - Efficient 2.0 μm infrared and visible upconversion emissions have been observed in Ho3+/Yb3+ co-doped mixed-alkali bismuth gallate (LKBBG) glasses having a maximum-phonon energy of 673 cm-1. The Judd-Ofelt parameters Ω2, Ω4 and Ω6 of Ho3+ indicate that there is a high asymmetry and strong covalent environment in LKBBG glasses. The large absorption and emission cross-sections of Yb3+ confirm that it is a suitable sensitizer for capturing and transferring pump energy to Ho3+. The emission cross-section profile for the 5I7 → 5I8 transition is derived using the reciprocity method and the peak value is 5.54 × 10-21 cm2, which is much larger than the value in fluorozircoaluminate glasses. LKBBG glasses exhibit low maximum-phonon energy and large refractive index, and it is possible to achieve an effective 1.66 μm U-band emission of Ho3+ under 900nm laser radiation. © 2008 Elsevier B.V. All rights reserved.

AB - Efficient 2.0 μm infrared and visible upconversion emissions have been observed in Ho3+/Yb3+ co-doped mixed-alkali bismuth gallate (LKBBG) glasses having a maximum-phonon energy of 673 cm-1. The Judd-Ofelt parameters Ω2, Ω4 and Ω6 of Ho3+ indicate that there is a high asymmetry and strong covalent environment in LKBBG glasses. The large absorption and emission cross-sections of Yb3+ confirm that it is a suitable sensitizer for capturing and transferring pump energy to Ho3+. The emission cross-section profile for the 5I7 → 5I8 transition is derived using the reciprocity method and the peak value is 5.54 × 10-21 cm2, which is much larger than the value in fluorozircoaluminate glasses. LKBBG glasses exhibit low maximum-phonon energy and large refractive index, and it is possible to achieve an effective 1.66 μm U-band emission of Ho3+ under 900nm laser radiation. © 2008 Elsevier B.V. All rights reserved.

KW - Ho3+/Yb3+

KW - Infrared and upconversion emission

KW - Mixed-alkali bismuth gallate glasses

KW - Radiative parameters

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U2 - 10.1016/j.saa.2008.05.019

DO - 10.1016/j.saa.2008.05.019

M3 - RGC 21 - Publication in refereed journal

C2 - 18586553

SN - 1386-1425

VL - 71

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EP - 1550

JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

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