Polarized spectral properties of Sm3+:CaYAlO4 crystal
Polarized spectral properties of Sm3+:CaYAlO4 crystal
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Sm3 :CaYAlO4 晶体的偏振光谱特性
DOI：
10.1016/j.optmat.2021.111066
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发表时间：
2021
影响因子：
3.9
通讯作者：
Gao Shufang
中科院分区：
文献类型：
--
作者：
Wang Zhiyuan;Wang Yeqing;Sun Yijian;Yu Yi;Gao Shufang
2分07秒。采用Czochralski法生长了% Sm3+掺杂的cayalo4晶体。在室温下记录了极化光谱和衰减曲线。根据Judd-Ofelt理论计算了光谱参数。在408 nm处，π和σ极化的吸收截面分别为2.43 × 10−20cm2和4.09 × 10−20cm2。荧光分支率为45.51%，主发射波段位于601 nm处，π-极化截面为10.06 × 10−22cm2， σ-极化截面为6.97 × 10−22cm2。4g5 /2倍体的衰减寿命为0.83 ms。Sm3+: cayalo4晶体还具有良好的温度依赖性荧光特性。结果表明，Sm3+: cayalo4晶体可能是GaN/InGaN激光二极管直接泵浦的橙黄色激光的潜在候选者。
A 2.07 at.% Sm3+-doped CaYAlO4crystal was grown by the Czochralski method. The polarized spectra and decay curve were recorded at room temperature. The spectroscopic parameters were calculated on the basis of Judd-Ofelt theory. The absorption cross-sections at 408 nm were obtained to be 2.43 × 10−20cm2and 4.09 × 10−20cm2for the π and σ polarization, respectively. The main emission band, which had a fluorescence branching ratio of 45.51%, was located at 601 nm with cross-sections of 10.06 × 10−22cm2(π-polarization), 6.97 × 10−22cm2(σ-polarization). The decay lifetime of4G5/2multiplet was measured to be 0.83 ms. The Sm3+:CaYAlO4crystal also has a good temperature-dependent fluorescence property. The results indicate the Sm3+:CaYAlO4crystal may be a potential candidate of orange-yellow laser pumped directly by the GaN/InGaN laser diode.