State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, ChineseAcademy of Sciences, Shanghai 201800, China.
Opt Lett. 2009 Aug 15;34(16):2486-8. doi: 10.1364/ol.34.002486.
Bi-Tm-codoped, and Tm- and Bi- singly doped germanate glasses were prepared, and their luminescent properties were investigated. Intense broadband near-IR emission with FWHM of 300 nm was observed in the Bi-Tm codoped glass. The emission intensity of Tm(3+):(3)H(4)-(13)F(4) and (3)F(4)-(13)H(5) transitions in the Bi-Tm-codoped glass was highly increased and reduced, respectively. The fluorescence lifetime of Tm(3+) at 1470 nm increased from 204 micros to 301 micros after codoping. These should be due to the efficient energy transfer from Bi-related centers to Tm(3+) ions. The highest energy transfer efficiency is estimated to be approximately 50%.
制备了双掺 Tm 和 Bi、单掺 Tm 和 Bi 的锗酸盐玻璃，并研究了它们的发光性能。在双掺 Tm 和 Bi 的玻璃中观察到了半峰宽为 300nm 的强宽带近红外发射。Bi-Tm 共掺玻璃中 Tm(3+)：(3)H(4)-(13)F(4)和(3)F(4)-(13)H(5)跃迁的发射强度分别显著增加和降低。共掺后，1470nm 处 Tm(3+)的荧光寿命从 204 微秒增加到 301 微秒。这应该归因于 Bi 相关中心到 Tm(3+)离子的有效能量转移。估计最高能量转移效率约为 50%。
