CW one-micron (4F3/2-4I11/2) laser oscillation of Nd3+ ions in the melilite-type crystal Ca2MgSi2O7:Nd3+(Na+) at its incommensurate–commensurate phase transition

CW one-micron (4F3/2-4I11/2) laser oscillation of Nd3+ ions in the melilite-type crystal Ca2MgSi2O7:Nd3+(Na+) at its incommensurate–commensurate phase transition
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黄长石型晶体 Ca2MgSi2O7:Nd3 (Na ) 中 Nd3 离子在不相称相变时的 CW 一微米 (4F3/2-4I11/2) 激光振荡

DOI:
10.1007/s00340-011-4571-7
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发表时间:
2011
期刊:
Applied Physics B
影响因子:
--
通讯作者:
L. Bohatý
L. Bohatý
中科院分区:
--
文献类型:
--
作者:
A.A. Kaminskii;H. Nakao;A. Shirakawa;K. Ueda;J. Liebertz;P. Becker;L. Bohatý

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研究了新型黄长石型激光晶体 CaMgSiO: Nd (Na) 的光谱和受激发射 (F→ I) 特性,并在涵盖其不相称-相称 (IC↔ N) 相变的温度范围内进行了研究。通过差示扫描量热法 (DSC) 确定未掺杂 CaMgSiO 和掺杂晶体的相变温度分别为 346.6 K(未掺杂)和 341.3 K(掺杂)。与温度相关的光谱和激光实验表明,连续波输出功率显着下降,并且在相变区域产生的激光束发生强烈畸变。 CaMgSiO: Nd (Na) 中观察到的 Nd lasants 晶场无序主要是由于不同价态的阳离子占据了 Ca 的位置,而不可通约性的影响次要。
The spectroscopic and stimulated-emission (F→ I) properties of the novel melilite-type laser crystal CaMgSiO: Nd (Na) were studied in a temperature range that covers its incommensurate-commensurate (IC↔ N) phase transition. The phase transition temperatures of both undoped CaMgSiO and the doped crystal were ascertained at 346.6 K (undoped) and 341.3 K (doped) by means of differential scanning calorimetry (DSC). The temperature-dependent spectroscopic and laser experiments showed a significant decrease in CW output power and a strong distortion of the generated lasing beam in the region of the phase transition. The observed crystal field disorder of Nd lasants in CaMgSiO: Nd (Na) is dominantly due to occupation of the position of Ca by cations of different valency, while the influence of incommensurability is of minor importance.
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