FLUORESCENCE LIFETIME AND QUANTUM EFFICIENCY FOR 5D-]4F TRANSITIONS IN EU2+ DOPED CHLORIDE AND FLUORIDE-CRYSTALS
FLUORESCENCE LIFETIME AND QUANTUM EFFICIENCY FOR 5D-]4F TRANSITIONS IN EU2+ DOPED CHLORIDE AND FLUORIDE-CRYSTALS
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DOI：
10.1016/0022-2313(80)90004-6
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发表时间：
1980-01-01
影响因子：
3.6
通讯作者：
BRIXNER, LH
中科院分区：
文献类型：
--
作者：
KOBAYASI, T;MROCZKOWSKI, S;BRIXNER, LH
本文研究了利用Eu ~（2+）掺杂的金属氟化物、氯化物和氟氯化物的有效宽带5d → 4f发射的宽调谐激光器的有关参数。测量了MF_2、MC_2（M = Ca，Ba，Sr）和MFCl（M = Ba，Sr）的吸收光谱、发射光谱、量子效率和荧光寿命。根据我们的光谱数据计算了CaF_2：Eu ~（2+）激光作用的泵浦能量阈值。尽管估计表明CaF 2：Eu可以很容易地达到激光阈值，但发现该系统中的强激发态吸收会阻止激光振荡。
An investigation of the relevant parameters for broadly tunable lasers utilizing the efficient, broad-band 5d → 4f emission in a number of Eu2+doped metal fluorides, chlorides, and fluoro-chlorides has been performed. Results of measurements of absorption and emission spectra, quantum efficiencies, and fluorescence lifetimes in MF2and MCl2(M = Ca, Ba, Sr) and MFCl (M = Ba, Sr) are presented. A calculation of the pump energy threshold for laser action in CaF2: Eu2+based on our spectroscopic data is made. Although the estimation indicated that laser threshold in CaF2: Eu can be easily achieved, strong excited-state absorption in this system was found to prohibit laser oscillation.