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应用正交试验的方法对腔长２５０ｍｍＨｅ－Ｎｅ激光管ＴＥＭ（００）模参数进行试验，得到了ＴＥＭ（００）模参数的最佳匹配值，并将其应用于成批生产，经过近十年，单模率一直稳定在９０％以上。
The TEM (00) mode parameters of 250mmHe-Ne laser tube with cavity length were tested by orthogonal test. The best matching value of TEM (00) mode parameters was obtained and applied to batch production. After nearly ten years , Single-mode rate has been stable at 90%.