Development of Nd,Cr co-doped laser materials for solar-pumped lasers
Development of Nd,Cr co-doped laser materials for solar-pumped lasers
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DOI：
10.1117/12.2041649
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发表时间：
2014-02
影响因子：
1.5
通讯作者：
T. Ogawa;S. Wada;M. Higuchi
中科院分区：
文献类型：
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作者：
T. Ogawa;S. Wada;M. Higuchi
太阳能泵浦激光器在可再生能源创造领域引起了人们的注意。然而，由于从太阳能到激光能的转换效率低，所以这种激光器还没有实际应用。在这项工作中，我们生长和评估的Nd 3+，Cr 3+共掺杂YVO 4和CaYAlO 4晶体的太阳能泵浦激光器。我们成功地使用这两种晶体显著增加了从紫外到可见光区域的吸收。最大吸收系数为58 cm-1，在402 nm处，1.0 at。% Cr共掺Nd：YVO 4晶体。Nd，Cr：CaYAlO 4的吸收系数在0.1at的情况下在430 nm处达到52 cm-1。%的Cr掺杂。在400 nm泵浦Nd，Cr：YVO 4时，观察到1 μm的强荧光。结果表明，在Nd，Cr：YVO 4中发生了Cr到Nd的有效能量转移。
Solar-pumped lasers have attracted attention in the area of renewable energy creation. However, since the conversion efficiency from solar energy to laser energy is low, such lasers are not yet in practical use. In this work, we grew and evaluated Nd3+,Cr3+-co-doped YVO4 and CaYAlO4 crystals for solar-pumped lasers. We succeeded in dramatically increasing the absorption from the ultraviolet to visible region using both crystals. The maximum absorption coefficient was 58 cm−1 at 402 nm for 1.0 at. % Cr-co-doped Nd:YVO4 crystal. The absorption coefficient of Nd,Cr:CaYAlO4 reached 52 cm−1 at 430 nm in the case of 0.1 at. % Cr doping. Strong fluorescence at 1 µm was observed upon pumping Nd,Cr:YVO4 at 400 nm. The result indicates effective energy transfer from Cr to Nd occurred in the Nd,Cr:YVO4.