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埋粉热压后处理制备Nd∶YAG激光陶瓷

DOI: 10.7521/j.issn.0454-5648.2014.06.09

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Abstract:

以市售高纯氧化物粉体为原料,采用固相反应烧结-埋粉热压后处理组合烧结工艺制备了直径为30mm、厚度为3.05mm的Nd3+∶Y3Al5O12(Nd∶YAG)透明陶瓷样品。研究了埋粉热压后处理工艺对Nd∶YAG陶瓷的光学性能、残留应力和光学均匀性等的影响。研究表明,通过将真空烧结后的Nd∶YAG陶瓷埋入BN粉体中进行热压后处理,克服了Nd∶YAG陶瓷在热压过程中容易碎裂及碳污染问题,并进一步排除了Nd∶YAG陶瓷内部的残留气孔,其透过率大于80%。埋粉热压后处理工艺对Nd∶YAG陶瓷的残留应力分布和光学均匀性没有影响。采用光纤耦合808nm激光二极管泵浦Nd∶YAG陶瓷样品,实现了连续瓦级激光输出,最高输出功率为3.6W,光光转换效率为20%。

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