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Chin. Phys. B, 2026, Vol. 35(7): 077801    DOI: 10.1088/1674-1056/ae12d0
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Blue-green luminescence properties and energy transfer in Tm3+/Tb3+ co-doped TeO2-GeO2-Bi2O3-BaF2 glass

Ruizhen Pang(庞瑞祯)1,†, Tong Wu(吴童)3,†, Kexuan Han(韩科选)1,2,‡, Zhenyu Zhou(周振宇)1, and Wei Zheng(郑威)1
1 School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China;
2 Chongqing Research Institute, Changchun University of Science and Technology, Chongqing 401120, China;
3 CDGM GLASS Co., Ltd., Chengdu 610100, China
Abstract  Tm$^{3+}$/Tb$^{3+}$ co-doped TeO$_{2}$-GeO$_{2}$-Bi$_{2}$O$_{3}$-BaF$_{2}$ glasses were synthesized via high-temperature melt-quenching to achieve blue-green fluorescence emission. Under 808-nm pump excitation, the TGBB2 sample (Tm$_{2}$O$_{3}$:Tb$_{4}$O$_{7} = 3:8$) exhibited balanced emissions at 452 nm (blue, Tm$^{3+}$: $^{1}$G$_{4}\to\,{}^{3}$H$_{6}$) and 544 nm (green, Tb$^{3+}$: $^{5}$D$_{4}\to\,{}^{7}$F$_{5}$). With increasing Tb$^{3+}$ concentration, green emission intensity increased while blue emission decreased, confirming efficient Tm$^{3+}\to $Tb$^{3+}$ energy transfer. Key performance metrics for TGBB2 included: a forward energy transfer coefficient of 571.83$\times10^{-40}$ cm$^{6}$/s (far exceeding the reverse coefficient of 63.12$\times10^{-40}$ cm$^{6}$/s), an energy transfer efficiency of 99.5%, maximum emission cross-sections of 5.87$\times10^{-21}$ cm$^{2}$ (476 nm, Tm$^{3+}$) and $3.37\times 10^{-21}$ cm$^{2}$ (486 nm, Tb$^{3+}$), and corresponding gain coefficients of 2.98 cm$^{-1}$ and 0.46 cm$^{-1}$. These results validate the glass's low laser threshold, making Tm$^{3+}$/Tb$^{3+}$ co-doped tellurite-germanate-bismuthate glass a promising candidate for blue-green laser communication and underwater optical transmission.
Keywords:  Tm$^{3+}$/Tb$^{3+}$ co-doping      tellurite-germanate-bismuthate glass      blue-green wavelength band      energy transfer  
Received:  21 July 2025      Revised:  09 September 2025      Accepted manuscript online:  14 October 2025
PACS:  78.55.-m (Photoluminescence, properties and materials)  
  81.05.Kf (Glasses (including metallic glasses))  
  71.55.-i (Impurity and defect levels)  
  42.55.-f (Lasers)  
Fund: Project supported by the Natural Science Foundation of Jilin Province, China (Grant No. YDZJ202401333ZYTS)
Corresponding Authors:  Kexuan Han     E-mail:  hankexuan@cust.edu.cn

Cite this article: 

Ruizhen Pang(庞瑞祯), Tong Wu(吴童), Kexuan Han(韩科选),Zhenyu Zhou(周振宇), and Wei Zheng(郑威) Blue-green luminescence properties and energy transfer in Tm3+/Tb3+ co-doped TeO2-GeO2-Bi2O3-BaF2 glass 2026 Chin. Phys. B 35 077801

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