High performance FIR thermometry on the basis of the redshift of CTB by dual-wavelength alternative excitation in Eu<sup>3+</sup>:YVO<sub>4</sub>

Lixin Peng; Yuan Zhou; Feng Qin; LeiPeng Li; ZhiGuo Zhang

doi:10.1364/OL.442429

Optics Letters
Vol. 46,
Issue 23,
pp. 5818-5821
(2021)
•https://doi.org/10.1364/OL.442429

High performance FIR thermometry on the basis of the redshift of CTB by dual-wavelength alternative excitation in Eu³⁺:YVO₄

Lixin Peng, Yuan Zhou, Feng Qin, LeiPeng Li, and ZhiGuo Zhang

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Lixin Peng, Yuan Zhou, Feng Qin, LeiPeng Li, and ZhiGuo Zhang, "High performance FIR thermometry on the basis of the redshift of CTB by dual-wavelength alternative excitation in Eu³⁺:YVO₄," Opt. Lett. 46, 5818-5821 (2021)

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Abstract

Compared with the forbidden 4f transition of rare earth ions, the strong absorption of the charge transfer band (CTB) enabled fluorescence thermometry to have high luminescence efficiency. Based on the temperature induced redshift of CTB, a high performance fluorescence intensity ratio (FIR) thermometry performed by dual-wavelength alternative excitation was studied. By way of the rising and falling edges of CTB in ${\rm{E}}{{\rm{u}}^{{\textbf{3}} +}}$ doped ${{\rm{YVO}}_{\textbf{4}}}$, monochrome sensitivity as a function of excitation wavelength was studied in the range of 303–783 K. The excitation wavelength with the highest positive monochrome sensitivity was determined, as well as that with the negative one. The optimum FIR temperature sensing strategy is proposed, and the theoretical highest relative sensitivity (${{\textbf{S}}_r}$) is calculated to be 1.86% ${{\rm{K}}^{- 1}}$, with the lowest uncertainty ($\Delta T$) of 0.1 K at 783 K.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Host	Rare Earth Ions	Transition	$Δ E$ ( $c m^{- 1}$ )	Temperature Range (K)	$S_{r}$ ( $\times 10^{- 2}$ $K^{- 1}$ )	Refs.
$N a G d (M o O_{4})^{2}$	$P r^{3 +}$ , $T b^{3 +}$	$^{1} D_{2} \to^{3} H_{4}$ , $^{5} D_{4} \to^{7} F_{5}$	2596	303–483	0.61 at 783 K	[26]
ZnO	$E u^{3 +}$	$^{5} D_{0}$ , $^{5} D_{1} \to^{7} F_{2}$	2094	83–493	0.49 at 783 K	[27]
Gd ${V O}_{4}$	$E u^{3 +}$	$^{5} D_{0}$ , $^{5} D_{1} \to^{7} F_{1}$	1530	298–750	0.36 at 783 K	[28]
MOF	$D y^{3 +}$	$^{4} I_{15 / 2}$ , $^{4} F_{9 / 2} \to^{6} H_{15 / 2}$	1275	298–473	0.36 at 783 K	[29]
$Y_{2} O_{3}$	$E r^{3 +}$	$^{4} G_{11 / 2}$ , $^{2} H_{9 / 2} \to^{4} I_{15 / 2}$	1362	303–783	0.32 at 783 K	[30]
${Y V O}_{4}$	$E u^{3 +}$	$^{5} D_{0} \to^{7} F_{2}$	—	303–783	1.86 at 783 K	This work

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Optics Letters