Intense near-UV upconversion luminescence in Tm3+/Yb3+co-doped low-phonon-energy lithium gallogermanate oxide glass

Bo Zhou; Lili Tao; Wei Jin; Yuen Hong Tsang

doi:10.1109/LPT.2012.2213805

Intense near-UV upconversion luminescence in Tm³⁺/Yb³⁺co-doped low-phonon-energy lithium gallogermanate oxide glass

Bo Zhou, Lili Tao, Wei Jin, Yuen Hong Tsang

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

Intense near-ultraviolet (UV) upconversion emission of 365 nm has been obtained in Tm3+/Yb3+co-doped lithium gallogermanate oxide glass upon a 980-nm laser diode excitation. This near-UV emission originates from the Tm3+:1D2→3H6 transition. The cross relaxation process [1G4,3H4]→[3F4,1D2] is shown to play a critical role in population of the emitting level Tm3+1D2. The low phonon energy (∼825 cm-1) and high transparency at near-UV of the glass matrix also contribute to this emission. The emission cross section is calculated to be 6.46 10-21cm2, which is larger than Tm3+1.47 and 1.80-μm transitions. The results indicate that, other than single crystal and nano-glass-ceramic, this system is a promising alternative for development of near-UV lasers.

Original language	English
Article number	6272322
Pages (from-to)	1726-1729
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	24
Issue number	19
DOIs	https://doi.org/10.1109/LPT.2012.2213805
Publication status	Published - 24 Sept 2012

Keywords

Energy transfer
Low-phonon-energy oxide glass
Tm near-ultraviolet (UV) upconversion luminescence 3+

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

More information

10.1109/LPT.2012.2213805

Cite this

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title = "Intense near-UV upconversion luminescence in Tm3+/Yb3+co-doped low-phonon-energy lithium gallogermanate oxide glass",

abstract = "Intense near-ultraviolet (UV) upconversion emission of 365 nm has been obtained in Tm3+/Yb3+co-doped lithium gallogermanate oxide glass upon a 980-nm laser diode excitation. This near-UV emission originates from the Tm3+:1D2→3H6 transition. The cross relaxation process [1G4,3H4]→[3F4,1D2] is shown to play a critical role in population of the emitting level Tm3+1D2. The low phonon energy (∼825 cm-1) and high transparency at near-UV of the glass matrix also contribute to this emission. The emission cross section is calculated to be 6.46 10-21cm2, which is larger than Tm3+1.47 and 1.80-μm transitions. The results indicate that, other than single crystal and nano-glass-ceramic, this system is a promising alternative for development of near-UV lasers.",

keywords = "Energy transfer, Low-phonon-energy oxide glass, Tm near-ultraviolet (UV) upconversion luminescence 3+",

author = "Bo Zhou and Lili Tao and Wei Jin and Tsang, {Yuen Hong}",

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AU - Zhou, Bo

AU - Tao, Lili

AU - Jin, Wei

AU - Tsang, Yuen Hong

PY - 2012/9/24

Y1 - 2012/9/24

N2 - Intense near-ultraviolet (UV) upconversion emission of 365 nm has been obtained in Tm3+/Yb3+co-doped lithium gallogermanate oxide glass upon a 980-nm laser diode excitation. This near-UV emission originates from the Tm3+:1D2→3H6 transition. The cross relaxation process [1G4,3H4]→[3F4,1D2] is shown to play a critical role in population of the emitting level Tm3+1D2. The low phonon energy (∼825 cm-1) and high transparency at near-UV of the glass matrix also contribute to this emission. The emission cross section is calculated to be 6.46 10-21cm2, which is larger than Tm3+1.47 and 1.80-μm transitions. The results indicate that, other than single crystal and nano-glass-ceramic, this system is a promising alternative for development of near-UV lasers.

AB - Intense near-ultraviolet (UV) upconversion emission of 365 nm has been obtained in Tm3+/Yb3+co-doped lithium gallogermanate oxide glass upon a 980-nm laser diode excitation. This near-UV emission originates from the Tm3+:1D2→3H6 transition. The cross relaxation process [1G4,3H4]→[3F4,1D2] is shown to play a critical role in population of the emitting level Tm3+1D2. The low phonon energy (∼825 cm-1) and high transparency at near-UV of the glass matrix also contribute to this emission. The emission cross section is calculated to be 6.46 10-21cm2, which is larger than Tm3+1.47 and 1.80-μm transitions. The results indicate that, other than single crystal and nano-glass-ceramic, this system is a promising alternative for development of near-UV lasers.

KW - Energy transfer

KW - Low-phonon-energy oxide glass

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