Upconversion luminescence, optical thermometric properties and energy transfer in Yb3+/Tm3+ co-doped phosphate glass

2018 ◽  
Vol 81 ◽  
pp. 78-83 ◽  
Author(s):  
Yong Chen ◽  
Guohua Chen ◽  
Xiangyu Liu ◽  
Jiwen Xu ◽  
Xiujuan Zhou ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Phosphate Glass ◽  
Upconversion Luminescence ◽  
Co Doped

Energy transfer and upconversion luminescence in Tm3+/Yb3+ co-doped lanthanum–zinc–lead–tellurite glasses

2008 ◽  
Vol 128 (1) ◽  
pp. 135-141 ◽  
Author(s):  
Qiuhua Nie ◽  
Xujie Li ◽  
Shixun Dai ◽  
Tiefeng Xu ◽  
Zhe Jin ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Upconversion Luminescence ◽  
Tellurite Glasses ◽  
Co Doped

scholarly journals Up-conversion luminescence in low phonon heavy metal oxide glass co-doped with Er3+/Ho3+

2018 ◽  
Vol 10 (1) ◽  
pp. 2 ◽  
Author(s):  
T. Ragiń ◽  
A. Baranowska ◽  
M. Sołtys ◽  
A. Górny ◽  
J. Zmojda ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Energy Transfer ◽  
Metal Oxide ◽  
Upconversion Luminescence ◽  
Bismuth Germanate ◽  
Oxide Glass ◽  
Oxide Glasses ◽  
Mid Infrared ◽  
Co Doped ◽  
Germanate Glasses

In this paper, heavy metal oxide glasses co-doped with erbium and holmium ions have been synthesized. Glass composition, based on the bismuth and germanium oxides, has been selected in terms of high thermal stability (delta T = 125 °C), high refractive index (n = 2.19) and low maximum phonon energy (hvmax = 724 cm-1). Up-conversion luminescence spectra under the 980 nm laser diode excitation have been observed as a result of radiative transitions within the quantum energy level structures of Er3+ and Ho3+ ions. Optimization of rare earth ions content has been conducted, the highest emission intensity in the visible wavelength range has been observed in glass co-doped with molar concentration 0.5 Er2O3 / 0.5 Ho2O3. Full Text: PDF ReferencesF. Zhang, Z. Bi, A. Huang, Z. Xiao, "Visible luminescence properties of Er3+?Pr3+ codoped fluorotellurite glasses", Opt. Materials 41, 112 (2014). CrossRef S. Li, S. Ye, T. Liu, H. Wang, D. Wang, "Enhanced up-conversion emissions in ZnO-LiYbO2:RE3+ (RE = Er or Ho) hybrid phosphors through surface modification", J. All. Comp. 658, 85 (2016). CrossRef J. Fu, X. Zhang, Z. Chao, Z. Li, J. Liao, D. Hou, H. Wen, X. Lu, X. Xie, "Enhanced upconversion luminescence of NaYF4:Yb, Er microprisms via La3+ doping", Opt. Laser Tech. 88, 280 (2017). CrossRef Y. Tian, R. Xu, L. Hu, J. Zhang, "2.7 ?m fluorescence radiative dynamics and energy transfer between Er3+ and Tm3+ ions in fluoride glass under 800 nm and 980 nm excitation", J. Quant. Spec. Rad. Tra. 113, 87 (2012). CrossRef M. Zhang, A. Yang, Y. Peng, B. Zhang, H. Ren, W. Guo, Y. Yang, C. Zhai, Y. Wang, Z. Yang, D. Tang, "Dy3+-doped Ga?Sb?S chalcogenide glasses for mid-infrared lasers", Mat. Res. Bul. 70, 55 (2015). CrossRef G. Yang, T. Li, "Broadband 1.53 ?m emission in Er3+-doped Ga-Bi-Pb-Ge heavy metal oxide glasses", J. Rare Earths 26, 924 (2008). CrossRef Y. Guo, Y. Tian, L. Zhang, L. Hu, J. Zhang, "Erbium doped heavy metal oxide glasses for mid-infrared laser materials", J. Non-Cryst. Solids 377, 119 (2013). CrossRef Z. Hou, Z. Xue, F. Li, M. Wang, X. Hu, S. Wang, "Luminescence and up-conversion mechanism of Er3+/Ho3+ co-doped oxyfluoride tellurite glasses and glass?ceramics", J. All. Comp. 577, 523 (2013). CrossRef X. Li, Q. Nie, S. Dai, T. Xu, L. Lu, X. Zhang, "Energy transfer and frequency upconversion in Ho3+/Yb3+ co-doped bismuth-germanate glasses", J. All. Comp. 454, 510 (2008). CrossRef S.S. Rojas, J.E. De Souza, M.R.B. Andreeta, A.C. Hernandes, "Influence of ceria addition on thermal properties and local structure of bismuth germanate glasses", J. Non-Cryst. Solids 356, 2942 (2010). CrossRef M.S. Ebrahim, Irina, Mid-infrared coherent sources and applications, Springer (2008). CrossRef T. Ragin, J. Zmojda, M. Kochanowicz, P. Miluski, P. Jelen, M. Sitarz, D. Dorosz, "Enhanced mid-infrared 2.7 ?m luminescence in low hydroxide bismuth-germanate glass and optical fiber co-doped with Er3 +/Yb3 + ions", J. Non-Cryst. Solids 457, 169 (2017). CrossRef K. Biswas, A.D. Sontakke, R. Sen, K. Annapurna, "Enhanced 2 ?m broad-band emission and NIR to visible frequency up-conversion from Ho3+/Yb3+ co-doped Bi2O3?GeO2?ZnO glasses", Spectr. Acta. Part A, Mol. Biomol. Spectr. 112, 301-308 (2013). CrossRef R.S. Romaniuk, D. Dorosz, J. Żmojda, M. Kochanowicz, W. Mazerski, "Upconversion luminescence in tellurite glass codoped with Yb3+/Ho3+ ions", Proc. of SPIE 8903, 890307 (2013). CrossRef

scholarly journals Volume and surface effects on two-photonic and three-photonic processes in dry co-doped upconversion nanocrystals

Nano Research ◽  
2021 ◽  
Author(s):  
Bettina Grauel ◽  
Christian Würth ◽  
Christian Homann ◽  
Lisa Krukewitt ◽  
Elina Andresen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Surface Passivation ◽  
Upconversion Luminescence ◽  
Three Dimensional ◽  
Solid Core ◽  
Excitation Power Density ◽  
Surface Protection ◽  
Upconversion Nanocrystals ◽  
Co Doped

AbstractDespite considerable advances in synthesizing high-quality core/shell upconversion (UC) nanocrystals (NC; UCNC) and UCNC photophysics, the application of near-infrared (NIR)-excitable lanthanide-doped UCNC in the life and material sciences is still hampered by the relatively low upconversion luminescence (UCL) of UCNC of small size or thin protecting shell. To obtain deeper insights into energy transfer and surface quenching processes involving Yb3+ and Er3+ ions, we examined energy loss processes in differently sized solid core NaYF4 nanocrystals doped with either Yb3+ (YbNC; 20% Yb3+) or Er3+ (ErNC; 2% Er3+) and co-doped with Yb3+ and Er3+ (YbErNC; 20% Yb3+ and 2% Er3+) without a surface protection shell and coated with a thin and a thick NaYF4 shell in comparison to single and co-doped bulk materials. Luminescence studies at 375 nm excitation demonstrate back-energy transfer (BET) from the 4G11/2 state of Er3+ to the 2F5/2 state of Yb3+, through which the red Er3+4F9/2 state is efficiently populated. Excitation power density (P)-dependent steady state and time-resolved photoluminescence measurements at different excitation and emission wavelengths enable to separate surface-related and volume-related effects for two-photonic and three-photonic processes involved in UCL and indicate a different influence of surface passivation on the green and red Er3+ emission. The intensity and lifetime of the latter respond particularly to an increase in volume of the active UCNC core. We provide a three-dimensional random walk model to describe these effects that can be used in the future to predict the UCL behavior of UCNC.

scholarly journals Active glasses as the luminescent sources of radiation for sensor applications

2014 ◽  
Vol 62 (2) ◽  
pp. 393-397
Author(s):  
J. Żmojda ◽  
D. Dorosz ◽  
M. Kochanowicz ◽  
J. Dorosz
Keyword(s):  
Energy Transfer ◽  
Optical Fiber ◽  
Upconversion Luminescence ◽  
Spectroscopic Properties ◽  
Photon Absorption ◽  
Pump Radiation ◽  
Absorption Mechanism ◽  
Sensor Applications ◽  
Doped Glasses ◽  
Co Doped

Abstract The article presents physicochemical, thermal and spectroscopic properties of two different glass systems: TeO2-GeO2-PbO-PbF2- BaO-Nb2O5-LaF3 and SiO2-Al2O3-Sb2O3, co-doped with Yb3+/Tm3+ ions. Blue upconversion luminescence at a wavelength of 478 nm corresponding to the thulium 1G4 ⇥3H6 transition was observed under 976 nm pump radiation in both of the co-doped glasses. This indicated the existence of efficient Yb3+ ⇥ Tm3+ energy transfer via three-photon absorption mechanism. Thermal and optical results substantiate the claim for practical applicability of the manufactured glasses in design of optical fiber sources.

scholarly journals Upconversion Visible Light Emission in Yb/Pr Co-Doped Yttria-Stabilized Zirconia (YSZ) Single Crystals

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1328
Author(s):  
Daini Wang ◽  
Wenxia Wu ◽  
Xiaojun Tan ◽  
Bernard A. Goodman ◽  
Shoulei Xu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Single Crystals ◽  
Light Emission ◽  
Upconversion Luminescence ◽  
Excited State Absorption ◽  
Yttria Stabilized Zirconia ◽  
Cubic Phase ◽  
Stabilized Zirconia ◽  
Transition Mechanism ◽  
Co Doped

As a development on previous research on single crystals of Pr3+-doped yttria-stabilized zirconia (YSZ), we report here the preparation and optical properties of Yb/Pr co-doped YSZ single crystals with different Yb2O3 concentrations. Results from X-ray diffraction (XRD) and Raman spectroscopy indicated that all of the crystal samples had a cubic phase structure, and transmission was ≥88% in the 550–780 nm range. Photoluminescence (PL) under excitation with a 980 nm laser showed upconversion emission, and several peaks were observed centered on 448 nm, 508 nm, 525 nm, 542 nm, 617 nm and 656 nm. The effects of excited state absorption (ESA), energy transfer upconversion (ETU), cross relaxation (CR), and cooperative energy transfer (CET) on the upconversion luminescence and energy transition mechanism in YSZ crystals were further studied. The fluorescence lifetime of the 3P0 → 3H5 transition at 542 nm reached 207 μs, which shows that the samples are of potential use for laser and fluorescence output.

scholarly journals WHISPERING GALLERY MODE LASERS IN ERBIUM/YTTERBIUM CODOPED PHOSPHATE GLASSES

2017 ◽  
Vol 24 (1&2) ◽  
pp. 119-124
Author(s):  
Tran Thi Tam ◽  
Dang Quoc Trung ◽  
Le Huu Minh ◽  
Tran Anh Vu ◽  
Do Ngoc Chung ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Full Advantage ◽  
Phosphate Glass ◽  
Whispering Gallery Mode ◽  
Transfer Effect ◽  
Phosphate Glasses ◽  
Glass Microsphere ◽  
Mode Laser ◽  
Whispering Gallery ◽  
Co Doped

The study of whispering gallery mode laser in Er3+/Yb3+ co-doped phosphate glass microsphere has been reported. The coupling was carried out by fiber half taper technique. The microsphere lasers have been studied under pumping at 980 nm, to take full advantage of energy transfer effect from ion Ytterbium to ion Erbium. The observed lasing range extends from 1533 nm to 1612 nm.

scholarly journals Energy transfer and upconversion luminescence of Tm3+/Yb3+ co-doped lanthanum-zinc-lead-tellurite glasses

2007 ◽  
Vol 56 (4) ◽  
pp. 2261
Author(s):  
Jin Zhe ◽  
Nie Qiu-Hua ◽  
Xu Tie-Feng ◽  
Dai Shi-Xun ◽  
Shen Xiang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Upconversion Luminescence ◽  
Tellurite Glasses ◽  
Co Doped

Intense upconversion luminescence and energy-transfer mechanism of Ho3+ /Yb3+ co-doped SrLu2 O4 phosphor

2017 ◽  
Vol 100 (8) ◽  
pp. 3530-3539 ◽  
Author(s):  
Songbin Liu ◽  
Xinyu Ye ◽  
Shuifu Liu ◽  
Mengyao Chen ◽  
Hu Niu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Upconversion Luminescence ◽  
Transfer Mechanism ◽  
Energy Transfer Mechanism ◽  
Co Doped
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