Abstract
In a research of fast axial flow CO 2 laser sustained by 150 kHz silent discharge, we found the optimized gas mixing ratio was CO 2:N 2:He=1:22:5 or the content of helium was only about 18%. This result upset the situation of common CO 2 lasers in which the most important laser gas is helium. An explanation of our particular results and supporting experimental evidence are given.
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