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Multiphoton near-infrared quantum cutting luminescence phenomena of Tm3+ ion in (Y1-xTmx)3Al5O12 powder phosphor

Xiaobo Chen, Gregory J. Salamo, Guojian Yang, Yongliang Li, Xianlin Ding, Yan Gao, Quanlin Liu, and Jinghua Guo

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Abstract

In the present study, the multiphoton near-infrared downconversion quantum cutting luminescence phenomena of Tm3+ ion in (Y1-xTmx)3Al5O12 powder phosphor, which is currently a hot research topic throughout the world, is reported. The x-ray diffraction spectra, the visible to near-infrared excitation and emission spectra, and fluorescence lifetimes are measured. It is found that Tm:YAG powder phosphor has intense two-photon quantum cutting luminescence, and, for the first time, it is found that Tm:YAG powder phosphor has strong four-photon near-infrared quantum cutting luminescence of 1788 nm 3F4→3H6 fluorescence of Tm3+ ion. It is also found that the theoretical up-limit of four-photon near-infrared quantum cutting efficiency is about 282.12%, which results from both the {1D2→3F2, 3H6→3H4} and {3H4→3F4, 3H6→3F4} cross-energy transfers.

©2013 Optical Society of America

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Figures (8)
Fig. 1
Fig. 1 XRD pattern of the (Y0.800Tm0.200)3Al5O12 powder phosphor sample.

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Fig. 2
Fig. 2 The absorption spectrum of the (Y0.800Tm0.200)3Al5O12 powder phosphor sample.

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Fig. 3
Fig. 3 The visible excitation spectra of (A) (Y0.800Tm0.200)3Al5O12 and (B) (Y0.995Tm0.005)3Al5O12 powder phosphor, when the fluorescence received wavelength is positioned at 800 nm.

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Fig. 4
Fig. 4 The excitation spectra of (A) (Y0.800Tm0.200)3Al5O12 and (B) (Y0.995Tm0.005)3Al5O12 powder phosphor, when the fluorescence received wavelength is positioned at 1788 nm near-infrared wavelength.

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Fig. 5
Fig. 5 The luminescence spectra of (A) (Y0.800Tm0.200)3Al5O12 and (B) (Y0.995Tm0.005)3Al5O12 powder phosphor, when the 357.0 nm 3H6→1D2 excitation peak is selected as the excitation wavelength.

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Fig. 6
Fig. 6 The luminescence spectra of (A) (Y0.800Tm0.200)3Al5O12 and (B) (Y0.995Tm0.005)3Al5O12 powder phosphor, when the 680.0 nm 3H6→3F3 excitation peak is selected as the excitation wavelength.

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Fig. 7
Fig. 7 The fluorescence lifetime of the 800.0 nm (left) and 460.0 nm (right) visible fluorescence of (A) (Y0.800Tm0.200)3Al5O12 (red) and (B) (Y0.995Tm0.005)3Al5O12 (blue) powder phosphor, when excited by 680.0 nm (left) and 368.0 nm (right) pulsed light respectively.

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Fig. 8
Fig. 8 The schematic diagram of energy level structure and quantum cutting process.

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Equations (5)

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η tr,x%Tm ≈1− ∫ I x%Tm dt ∫ I 0.5%Tm dt .
η CR,x%Tm ( 3 H 4 )= η 3 H 4 ·[1− η tr,x%Tm ( 3 H 4 )]+2 η 3 F 4 η tr,x%Tm ( 3 H 4 ),
η CR,x%Tm ( 3 H 4 )=1+ η tr,x%Tm ( 3 H 4 ).
η CR,x%Tm ( 1 D 2 )={ η 1 D 2 ·[1− η tr,x%Tm ( 1 D 2 )]+2 η 3 H 4 η tr,x%Tm ( 1 D 2 )} ·{[ η 3 H 4 ·[1− η tr,x%Tm ( 3 H 4 )]+2 η 3 F 4 η tr,x%Tm ( 3 H 4 )},
η CR,x%Tm ( 1 D 2 )=[1+ η tr,x%Tm ( 1 D 2 )]·[1+ η tr,x%Tm ( 3 H 4 )].
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