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本文介绍了蓝宝石接触式Ｎｄ∶ＹＡＧ激光手术刀的特点，给出了一种基于几何光学理论的设计方法，通过实验测定样品刀头的输出光强分布，证明了设计方法的可靠性。
In this paper, the characteristics of sapphire contact Nd:YAG laser scalpel are introduced. A design method based on geometrical optics is given. The output light intensity distribution of the sample cutting head is experimentally determined, which proves the reliability of the design method.