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本文介绍了一种观察预制件内部结构的新方法,本方法具有简单、快速、设备费用少的优点。激光透射预制件可以清楚地显示出内部的沉积情况,以及各种缺陷,包括肉眼见不到的微小缺陷,文章初步分析了各种缺陷产生的原因,为预制件的制备工艺的改进提供了线索。同时,本文也粗略阐述了各种缺陷对光的传输性能的影响。
This paper presents a new method for observing the internal structure of a preform. This method has the advantages of simplicity, rapidity and low equipment cost. The laser-transmissive preform clearly shows the internal deposition and various defects, including tiny imperfections that are invisible to the naked eye. The article analyzes the causes of various defects preliminarily and provides clues for the improvement of the preparation process of the preform . At the same time, this article also roughly described the impact of various defects on the light transmission performance.