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采用高功率LDA紧密环绕抽运10mm× 10mmNd :YLF和两级双程离轴行波放大结构 ,实现了对 5mm× 5mm口径激光的放大。分析并实验研究了在不同抽运电流及不同抽运延时条件下 ,激光放大器及两级双程离轴放大系统小信号增益的规律。实验得到两级双程放大系统的小信号净增益可达 6 0 0
Using high-power LDA closely surrounding pumping 10mm × 10mmNd: YLF and two-stage two-way off-axis traveling wave amplification structure to achieve a 5mm × 5mm diameter laser amplification. The law of small signal gain of laser amplifier and two-stage two-way off-axis amplification system under different pumping currents and different pumping delays is analyzed and experimentally studied. Experimental results show that the two-stage two-way amplification system has a small signal gain of 600