Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho3/Yb3:Y2O3, Gd2O3 under 976 nm diode laserexcitation

Y. Yu; Y. D. Zheng; F. Qin; Z. M. Cheng; C. B. Zheng; Z. G. Zhang; W. W. Cao

doi:10.1016/j.jlumin.2010.09.033

Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho³/Yb³:Y₂O₃, Gd₂O₃ under 976 nm diode laserexcitation

Y. Yu, Y. D. Zheng, F. Qin, Z. M. Cheng, C. B. Zheng, Z. G. Zhang, W. W. Cao

Research output: Contribution to journal › Article

13 Scopus citations

Abstract

Upconversion (UC) spectra of Ho³/Yb³ codoped Y ₂O₃, Gd₂O₃ bulk ceramics were obtained under the excitation of a 976 nm diode laser. Systematic experimental studies, including power dependence, luminescence lifetime, and the intensity ratio σ for the green to NIR emissions, were carried out in order to confirm the UC mechanism of Ho³ ions. Our results demonstrated that the NIR emission was associated with the ⁵F₄/ ⁵S₂→⁵I₇ transition of Ho ³ ions without the contribution of the ⁵I ₄→⁵I₈ transition for Ho ³/Yb³ codoped Y₂O₃ and Gd ₂O₃ bulk ceramics. Additionally, population saturation in the ⁵I₇ energy level had been observed in Ho ³/Yb³ codoped Y₂O₃, Gd ₂O₃ bulk ceramics. All experimental observations can be well explained by the steady-state rate equations.

Original language	English (US)
Pages (from-to)	190-193
Number of pages	4
Journal	Journal of Luminescence
Volume	131
Issue number	2
DOIs	https://doi.org/10.1016/j.jlumin.2010.09.033
State	Published - Feb 2011

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
Chemistry(all)
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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Yu, Y., Zheng, Y. D., Qin, F., Cheng, Z. M., Zheng, C. B., Zhang, Z. G., & Cao, W. W. (2011). Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho³/Yb³:Y₂O₃, Gd₂O₃ under 976 nm diode laserexcitation. Journal of Luminescence, 131(2), 190-193. https://doi.org/10.1016/j.jlumin.2010.09.033

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title = "Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho3/Yb3:Y2O3, Gd2O3 under 976 nm diode laserexcitation",

abstract = "Upconversion (UC) spectra of Ho3/Yb3 codoped Y 2O3, Gd2O3 bulk ceramics were obtained under the excitation of a 976 nm diode laser. Systematic experimental studies, including power dependence, luminescence lifetime, and the intensity ratio σ for the green to NIR emissions, were carried out in order to confirm the UC mechanism of Ho3 ions. Our results demonstrated that the NIR emission was associated with the 5F4/ 5S2→5I7 transition of Ho 3 ions without the contribution of the 5I 4→5I8 transition for Ho 3/Yb3 codoped Y2O3 and Gd 2O3 bulk ceramics. Additionally, population saturation in the 5I7 energy level had been observed in Ho 3/Yb3 codoped Y2O3, Gd 2O3 bulk ceramics. All experimental observations can be well explained by the steady-state rate equations.",

author = "Y. Yu and Zheng, {Y. D.} and F. Qin and Cheng, {Z. M.} and Zheng, {C. B.} and Zhang, {Z. G.} and Cao, {W. W.}",

year = "2011",

month = feb,

doi = "10.1016/j.jlumin.2010.09.033",

language = "English (US)",

volume = "131",

pages = "190--193",

journal = "Journal of Luminescence",

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number = "2",

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T1 - Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho3/Yb3:Y2O3, Gd2O3 under 976 nm diode laserexcitation

AU - Yu, Y.

AU - Zheng, Y. D.

AU - Qin, F.

AU - Cheng, Z. M.

AU - Zheng, C. B.

AU - Zhang, Z. G.

AU - Cao, W. W.

PY - 2011/2

Y1 - 2011/2

N2 - Upconversion (UC) spectra of Ho3/Yb3 codoped Y 2O3, Gd2O3 bulk ceramics were obtained under the excitation of a 976 nm diode laser. Systematic experimental studies, including power dependence, luminescence lifetime, and the intensity ratio σ for the green to NIR emissions, were carried out in order to confirm the UC mechanism of Ho3 ions. Our results demonstrated that the NIR emission was associated with the 5F4/ 5S2→5I7 transition of Ho 3 ions without the contribution of the 5I 4→5I8 transition for Ho 3/Yb3 codoped Y2O3 and Gd 2O3 bulk ceramics. Additionally, population saturation in the 5I7 energy level had been observed in Ho 3/Yb3 codoped Y2O3, Gd 2O3 bulk ceramics. All experimental observations can be well explained by the steady-state rate equations.

AB - Upconversion (UC) spectra of Ho3/Yb3 codoped Y 2O3, Gd2O3 bulk ceramics were obtained under the excitation of a 976 nm diode laser. Systematic experimental studies, including power dependence, luminescence lifetime, and the intensity ratio σ for the green to NIR emissions, were carried out in order to confirm the UC mechanism of Ho3 ions. Our results demonstrated that the NIR emission was associated with the 5F4/ 5S2→5I7 transition of Ho 3 ions without the contribution of the 5I 4→5I8 transition for Ho 3/Yb3 codoped Y2O3 and Gd 2O3 bulk ceramics. Additionally, population saturation in the 5I7 energy level had been observed in Ho 3/Yb3 codoped Y2O3, Gd 2O3 bulk ceramics. All experimental observations can be well explained by the steady-state rate equations.

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