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介绍用高斯芯腔改善大功率CO2激光模式，以GaAs基片为例阐明位相统一输出镜的膜系设计方法和制作技巧.应用该镜获得了准基模700W输出;并有进一步提高功率和效率的潜力.
Introducing Gaussian core cavity to improve high-power CO2 laser mode, taking GaAs substrate as an example to illustrate the design method and fabrication technique of the phase-output mirror, and obtaining the quasi-fundamental 700W output with this mirror; and further improving the power and efficiency potential.