Orange‐red upconversion luminescence of Sm3+‐doped ZnO‐B2O3‐SiO2 glass by infrared femtosecond laser irradiation
Orange‐red upconversion luminescence of Sm3+‐doped ZnO‐B2O3‐SiO2 glass by infrared femtosecond laser irradiation
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DOI：
10.1889/jsid17.6.507
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发表时间：
2009-06
影响因子：
2.3
通讯作者：
Songmin Zhang;B. Zhu;Shifeng Zhou;J. Qiu
中科院分区：
文献类型：
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作者：
Songmin Zhang;B. Zhu;Shifeng Zhou;J. Qiu
摘要：在飞秒激光照射下，在Sm 3+掺杂的ZnO-B2 O3-SiO2玻璃中观察到近红外到可见光的上转换发光。发光光谱表明，上转换发光源于Sm ~（3+）的4G ~（5/2）→ 6 H ~（j/2）（j = 5，7，9）跃迁。Sm 3+的荧光强度对泵浦功率的依赖性表明，双光子吸收过程在红外辐射到可见光的转换中占主导地位。对上转换机制的分析表明，两个红外光子的同时吸收产生了上激发态的布居，从而导致了Sm 3+的特征橙子-红色发射。基于多光子吸收上转换发光，展示了三维显示。
Abstract— Near‐infrared‐to‐visible upconversion luminescence was observed in Sm3+‐doped ZnO‐B2O3‐SiO2 glass under femtosecond laser irradiation. The luminescence spectra show that the upconversion luminescence originates from 4G5/2 to 6Hj/2 (j = 5, 7, 9) transition of Sm3+. The dependence of the fluorescence intensity of Sm3+ on the pump power indicates that a two‐photon absorption process is dominant in the conversion of infrared radiation to the visible luminescence. The analysis of the upconversion mechanism reveals that the simultaneous absorption of two infrared photons produces the population of upper excited states, which leads to the characteristic orange‐red emission of Sm3+. A three‐dimensional display is demonstrated based on the multiphoton absorption upconversion luminescence.