Co-casting and optical characteristics of transparent segmented composite Er∶YAG laser ceramics
Co-casting and optical characteristics of transparent segmented composite Er∶YAG laser ceramics
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DOI：
10.1557/jmr.2010.0069
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发表时间：
2010-03
影响因子：
2.7
通讯作者：
E. Kupp;G. Messing;Julie M. Anderson;V. Gopalan;J. Dumm;C. J. Kraisinger;Ter-Gabrielyan Nikolay
中科院分区：
文献类型：
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作者：
E. Kupp;G. Messing;Julie M. Anderson;V. Gopalan;J. Dumm;C. J. Kraisinger;Ter-Gabrielyan Nikolay
采用胶态共铸工艺制备了高激光质量的多段复合陶瓷激光增益材料。该方法被证明为一个三段透明的复合棒62毫米长3毫米直径的未掺杂的钇铝石榴石（YAG），0.25%的Er：YAG，和0.5%的Er：YAG组成。复合材料中的Er浓度分布在段界面处具有陡峭的可控梯度，同时在每个段内保持恒定的掺杂剂浓度。复合棒在1645 nm（激光波长）处的透射率为84%，散射损耗为0.4% cm^-1。这种复合Er：YAG陶瓷棒的激光操作首次被证明，具有与Er：YAG单晶棒几乎等同的激光行为。
A novel colloidal co-casting process was developed to fabricate laser quality, multisegment composite ceramic laser gain materials. The approach was demonstrated for a three segment transparent composite rod 62 mm long by 3 mm diameter consisting of undoped yttrium aluminus garnet (YAG), 0.25% Er:YAG, and 0.5% Er:YAG. The Er concentration profile in the composite has steep, controllable gradients at the segment interfaces, while maintaining constant dopant concentrations within each segment. The composite rod has 84% transmittance at 1645 nm (the lasing wavelength) with a scatter loss of 0.4% cm^−1. Laser operation of such a composite Er:YAG ceramic rod was demonstrated for the first time, with nearly equivalent lasing behavior to an Er:YAG single crystal rod.