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 | |
| State | Published - Feb 1 2011 |
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All Science Journal Classification (ASJC) codes
- Biophysics
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Biochemistry
- Condensed Matter Physics
Cite this
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Experimental investigation on the upconversion mechanism of 754 nm NIR luminescence of Ho3/Yb3:Y2O3, Gd2O3 under 976 nm diode laserexcitation. / Yu, Y.; Zheng, Y. D.; Qin, F.; Cheng, Z. M.; Zheng, C. B.; Zhang, Z. G.; Cao, Wenwu.
In: Journal of Luminescence, Vol. 131, No. 2, 01.02.2011, p. 190-193.Research output: Contribution to journal › Article
TY - JOUR
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, Wenwu
PY - 2011/2/1
Y1 - 2011/2/1
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.
UR - http://www.scopus.com/inward/record.url?scp=78649629487&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649629487&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2010.09.033
DO - 10.1016/j.jlumin.2010.09.033
M3 - Article
VL - 131
SP - 190
EP - 193
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
IS - 2
ER -