摘要
掺杂在晶体Y2 SiO5(YSO)中的Pr3+ ,运用脉冲激光激发 3H4 → 1 D2 跃迁 ,粒子通过非辐射能量转移从能级 1 D2 转移到能级 3P0 ,测得了对应于 3P0 → 3H4 跃迁的反斯托克斯荧光光谱 ,由此可确定 3H4 的Stark分裂能级以及 3P0 能级的能量高度。与运用激光激发 3H4 → 1 D2 跃迁 ,通过观察 1 D2 → 3H4 斯托克斯荧光光谱确定3H4 的Stark分裂能级方法相比 ,该过程避免了不同晶点位置中 (Crystallographicsite)Pr3+ 的 1 D2 能级间的能量转移影响 ,从而具有较高的确定性。同时 。
In the Pr 3+-doped Y 2SiO 5, the population in 1D 2 of Pr 3+ can be transferred to 3P 0 state via non-radiative energy transfer by the laser excitation in resonance with 3H 4→ 1D 2, and we can experimentally study the Stark splitting of 3H 4 energy level via 3P 0→ 3H 4 anti-Stokes emission spectra. Because the anti-Stokes emission spectra can avoid the energy transfer between different crystallographic site 1D 2 energy levels, the above splitting lines attribution is more accurate than the assignment via 1D 2→ 3H 4 Stokes spectra by the laser excitation in resonance with 3H 4→ 1D 2. In addition, the character of the anti-Stokes fluorescence decay time was observed.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第4期385-387,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金 (1 0 0 740 1 5)
上海市重点学科基金资助
