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本文报导了最近研制成功的用于提高国产氩离子激光器相干长度的相干扩展器。利用这种基于Ｆ－Ｐ理论的相干扩展器可以使国产氩离子激光器的相干长度由不足５ｃｍ一下提高到ｍ的量级，功率损耗在２５％～４０％之间，有着很好的应用前景。
This paper reports the recently developed coherent spreader for improving the coherence length of domestic argon ion lasers. The coherent expander based on F-P theory can make the coherence length of domestic argon ion laser range from less than 5cm to the order of m, and the power loss is between 25% and 40%, which has a good application prospect.