Infrared to visible upconversion in Er3+‐doped‐lead‐germanate glass: Effects of Er3+ ion concentration
Infrared to visible upconversion in Er3+‐doped‐lead‐germanate glass: Effects of Er3+ ion concentration
复制标题
DOI：
10.1063/1.359436
复制
发表时间：
1995-05
影响因子：
3.2
通讯作者：
Z. Pan;S. Morgan;A. Loper;V. King;B. Long;W. E. Collins
中科院分区：
文献类型：
--
作者：
Z. Pan;S. Morgan;A. Loper;V. King;B. Long;W. E. Collins
研究了Er_2O_3浓度从0.1m o l%到2m o l%的锗铅玻璃中Er~(3+)的上转换机理。由797 nm连续近红外激光激发的4s3/2→4I15/2跃迁在室温下观察到较强的绿光发射。这种绿色发射在不同Er3+离子浓度的样品中显示出相似的强度。还观察到了→4I15/2的2H9/2跃迁产生的410 nm的微弱蓝光发射。这种蓝光发射和来自4F9/2能级的红光发射随着Er3+离子浓度的增加而增加。明亮的绿色发光是由激发能级吸收引起的，而蓝色发光是由三阶激发引起的，其中激发离子之间的库仑相互作用引起的能量传递起着关键作用。
The upconversion mechanism of Er3+ ions has been studied for lead‐germanate glasses containing Er2O3 concentrations from 0.1 mol % to 2 mol %. Intense green emission was observed at room temperature due to 4S3/2→4I15/2 transition excited by a cw near‐infrared laser beam at 797 nm. This green emission shows a similar intensity for samples with different Er3+ ion concentrations. A weak blue emission of 410 nm originating from the 2H9/2→4I15/2 transition was also observed. This blue emission and a red emission from the 4F9/2 level increase with the increase in Er3+ ion concentration. The bright green emission is attributed to the excited level absorption while the blue emission is due to a third step excitation where energy transfer between excited ions owing to their Coulomb interaction plays a key role.