Time resolve spectroscopy and energy transfer in Tm 3+ - Ho 3+ and Tm 3+ - Tb 3+ doped tellurite glasses
Time resolve spectroscopy and energy transfer in Tm 3+ - Ho 3+ and Tm 3+ - Tb 3+ doped tellurite glasses
复制标题
Tm 3 - Ho 3 和 Tm 3 - Tb 3 掺杂亚碲酸盐玻璃中的时间分辨光谱和能量转移
DOI：
10.1117/12.644715
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Shen S
中科院分区：
文献类型：
--
作者：
Shen S
Tm3+掺杂光纤在1.47 μm （3H4→3F4）处的辐射跃迁仍然是设计s波段（1420 ~ 1520 nm）高效光纤和波导放大器的潜在途径。然而，过渡的亚稳寿命比3h4能级长（5倍长），这意味着3f4能级必须迅速减少，以实现激光和放大器应用的有效反转。目前已知的降低较低3f4能级的方法之一是通过与其他稀土离子共掺杂，这对适度增益至关重要。对Tm3+- Ho3+和Tm3+- Tb3+掺杂的碲酸盐玻璃，测量了1.47 μm Tm3+的红外静态荧光光谱和时间分辨荧光光谱以及上3h4和下3f4激光能级的寿命。比较了供体和受体之间的能量转移率和非辐射转移效率。并对淬火机理进行了解释。Ho3+和Tb3+离子都降低了上、下激光能级的寿命，其中Tb3+离子比Ho3+离子更有效。
The radiative transition in Tm3+-doped fibre at 1.47 μm (3H4→3F4) remains a potential route for designing efficient fibre and waveguide amplifiers for the S-band (1420-1520 nm). The transition however suffers from a long metastable lifetime (5 times longer) than the3H4level, which means that the3F4level must be depopulated rapidly for efficient inversion for laser and amplifiers applications. One of the known means so far for depopulation of the lower3F4level is via co-doping with other rare-earth ions, essential for modest gain. For the Tm3+- Ho3+and Tm3+- Tb3+doped tellurite glasses, the IR static and time-resolve fluorescence spectra and the lifetimes of the upper3H4and lower3F4lasing levels for 1.47 μm of Tm3+were measured. The energy transfer rate and non-radiative transfer efficiency between donors and acceptors are compared. The quenching mechanism has been explained. Both the Ho3+and Tb3+ions reduce the lifetimes of the upper and lower lasing levels, with Tb3+ions proving more effective than the effects observed for Ho3+ions.