Two-pass amplification of CW laser by Nd/Cr:YAG ceramic Active mirror under lamp light pumping
Two-pass amplification of CW laser by Nd/Cr:YAG ceramic Active mirror under lamp light pumping
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DOI：
10.1016/j.optcom.2008.11.007
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发表时间：
2009-03
影响因子：
2.4
通讯作者：
T. Saiki;S. Motokoshi;K. Imasaki;M. Nakatsuka;C. Yamanaka;K. Fujioka;H. Fujita
中科院分区：
文献类型：
--
作者：
T. Saiki;S. Motokoshi;K. Imasaki;M. Nakatsuka;C. Yamanaka;K. Fujioka;H. Fujita
提出了采用透明 Nd/Cr:YAG 陶瓷的有源反射镜的概念。一种由弧光金属卤化物灯泵浦的新型陶瓷材料已经得到实验应用。 1064nm Nd:YAG 微尖振荡器中产生的 CW 激光由 Nd/Cr:YAG 陶瓷制成的有源镜放大，并由 CW 弧光灯泵浦。 Nd/Cr:YAG陶瓷的饱和功率密度低于Nd:YAG，因为Cr离子的敏化有效地提高了受激截面和寿命。在输入灯功率为9W的情况下，在保持空间光束质量的情况下最大输出激光功率高达3W；由此产生的 33% 的光光转换效率接近近 50% 的理论预测。
The concept of an Active mirror with transparent Nd/Cr:YAG ceramics is proposed. A new ceramic material pumped by an arc-metal-halide lamp has been experimentally implemented. CW-laser light generated in a 1064nm Nd:YAG micro-tip oscillator was amplified by an Active mirror made of Nd/Cr:YAG ceramic and pumped by CW arc-lamp light. The saturation power density of the Nd/Cr:YAG ceramic was lower than that of Nd:YAG because the stimulated-cross-section and lifetime were effectively enhanced by the sensitization of Cr ions. The maximum output laser power while keeping spatial beam quality was up to 3W with an input lamp power of 9W; the resulting optical–optical conversion efficiency of 33% was close to the theoretical prediction of nearly 50%.