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作为高功率激光系统的放大器的增益，是决定系统能否达到能量指标的关键因素，特别是主放大器，将有95％的总能量在这里获得．整个激光系统要达到设计要求的增益，主放大器本身的性能无疑是最关键的问题．神光Ⅱ实验装置中，使用了2×2列阵组合式同轴双程主放大器．允许四束φ2
The gain of an amplifier used as a high-power laser system is a key factor that determines whether the system can reach the energy level. Especially for the main amplifier, 95% of the total energy will be obtained here. The entire laser system to meet the design requirements of the gain, the main amplifier itself is undoubtedly the most critical performance issues. Shen Guang Ⅱ experimental device, the use of a 2 × 2 array combination of coaxial two-way main amplifier. Allow four beams φ2