当前位置: X-MOL 学术J. Alloys Compd. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhancement of 1.8 μm emission in Er3+/Tm3+ co-doped tellurite glasses: Role of energy transfer and dual wavelength pumping schemes
Journal of Alloys and Compounds ( IF 6.2 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.jallcom.2020.154038
K. Suresh , K. Venkata Krishnaiah , Ch Basavapoornima , Shobha Rani Depuru , C.K. Jayasankar

Abstract Thulium (Tm3+) and erbium (Er3+)-doped tellurite glasses were synthesized and explored their spectroscopic properties for optical amplification and medical appliances. The emission at 1.8 μm of Tm3+ ions has been enhanced significantly in Er3+/Tm3+ co-doped tellurite glasses under dual pumping lasers at 808 and 980 nm. Emission cross-section of the Tm3+ ions is found to be 3.46 × 10−20 cm2 which was evaluated by utilizing the Mc-Cumber theory. The possible energy transfer mechanisms between Er3+ and Tm3+ ions under 808 and 980 nm excitations were investigated by utilizing the excitation, emission and decay curve analyses. Effect of dual wavelength pumping on the 1.5 and 1.8 μm spectral profiles is also enlightened. Decay curves of Tm3+:3H4 → 3F4 (1440 nm) transition and Er3+: 4I13/2 → 4I15/2 (1531 nm) transition in the Tm3+ singly and Er3+/Tm3+ co-doped tellurite glasses have been analyzed under 808 nm laser excitation. Energy transfer efficiency is evaluated between Er3+: 4I13/2 and Tm3+:3F4 states from the decay curves and it is found to be 83%. The results are significant and indicating that the Er3+/Tm3+ co-doped tellurite glasses could be a potential candidate for optical fiber amplification at around 1.8 μm region under dual wavelength pumping scheme.

中文翻译:

Er3+/Tm3+ 共掺杂亚碲酸盐玻璃中 1.8 μm 发射的增强:能量转移和双波长泵浦方案的作用

摘要 合成了掺铥 (Tm3+) 和铒 (Er3+) 的碲酸盐玻璃,并探索了它们在光学放大和医疗器械中的光谱特性。在 808 和 980 nm 的双泵浦激光器下,Er3+/Tm3+ 共掺杂碲酸盐玻璃中 1.8 μm 的 Tm3+ 离子发射得到显着增强。发现 Tm3+ 离子的发射截面为 3.46 × 10−20 cm2,这是通过利用 Mc-Cumber 理论评估的。通过激发、发射和衰减曲线分析,研究了在 808 和 980 nm 激发下 Er3+ 和 Tm3+ 离子之间可能的能量转移机制。双波长泵浦对 1.5 和 1.8 μm 光谱剖面的影响也受到启发。Tm3+:3H4 → 3F4 (1440 nm) 跃迁和 Er3+ 的衰减曲线:4I13/2 → 4I15/2 (1531 nm) 跃迁在 Tm3+ 和 Er3+/Tm3+ 共掺杂的碲酸盐玻璃中在 808 nm 激光激发下进行了分析。根据衰减曲线,在 Er3+: 4I13/2 和 Tm3+:3F4 状态之间评估能量转移效率,发现为 83%。结果显着,表明 Er3+/Tm3+ 共掺杂亚碲酸盐玻璃可能是双波长泵浦方案下 1.8 μm 区域光纤放大的潜在候选者。
更新日期:2020-06-01
down
wechat
bug