Upconversion luminescence of Er^3^+ in alkali bismuth gallate glasses
Upconversion luminescence of Er^3^+ in alkali bismuth gallate glasses
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DOI：
10.1063/1.127018
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发表时间：
2000-07
影响因子：
3.5
通讯作者：
S. Man;E. Pun;P. Chung
中科院分区：
文献类型：
--
作者：
S. Man;E. Pun;P. Chung
研究了Er ~（3+）在碱金属铋镓酸盐玻璃中的频率上转换。对上转换机制进行了讨论，发现2 H 11/2→ 4 I 15/2和4S 3/2→ 4 I 15/2跃迁的上转换机制主要是激发态吸收，4F 9/2→ 4 I 15/2跃迁的上转换机制主要是能量转移。在800 nm激发下观察到强烈的绿色（约525-550 nm）和红色（约660 nm）发射带。在泵浦强度为15.6 W/cm 2时，绿色和红色发射的频率上转换效率分别为2.1×10−2和4.8×10−3。结果是最高的掺杂氧化物玻璃，并与报道的Er 3 +/Yb 3+共掺杂氟化物玻璃。
Frequency upconversion of Er3+ in alkali bismuth gallate glasses have been investigated. The upconversion mechanisms are discussed, and the dominant mechanisms are excited state absorption for the 2H11/2→4I15/2 and 4S3/2→4I15/2 transitions, and energy transfer upconversion for the 4F9/2→4I15/2 transition. Intense green (around 525–550 nm) and red (around 660 nm) emission bands were observed under 800 nm excitation. At a pump intensity of 15.6 W/cm2, frequency upconversion efficiencies of 2.1×10−2 and 4.8×10−3 were obtained for the green and red emissions, respectively. The results are the highest among doped oxide glasses, and are comparable to those reported for Er3+/Yb3+ codoped fluoride glasses.