高功率固体激光装置需要提供细致的功率平衡以满足物理实验要求。为研究众多因素对装置输出功率平衡的影响, 建立了高功率固体激光功率平衡综合分析模型。首先, 详细描述了模型的建立过程和主要算法。模型基于窄带脉冲激光传输、放大和频率转换模型开发, 可单独分析系统偏差或随机偏差对装置输出功率平衡的影响, 也可耦合这两种偏差进行集成分析。最后, 根据我国正在建造的最大固体激光装置10% rms功率平衡要求, 针对Haan整形脉冲, 分析了三种条件下装置输出功率不平衡, 并对子系统的随机因素指标进行了初步分配。该模型首次用于基本理解整形脉冲实现功率平衡的众多因素, 是分析大型固体激光装置功率平衡问题的有力工具。

High-power solid-state laser facility should provide careful power balance among beams for satisfying physical experiment requirement. To study effects of a number of differences on the output power balance, the power-balance integrated analytic model of high-power solid-state laser has been established. First, the detailed description was made for that how the model was built, and the main algorithms. The model was developed based on the amplification, propagation and frequency conversion of narrow-band pulse laser. The model can solely analyze the influence of system deviation, or of random deviation on the output power balance, or together. Finally, the output-power-balance results at three conditions were analyzed by Haan pulse shape to meet 10% rms power imbalance requirement of the largest solid-state laser facility which is now building in our country, as well as the subsystem random-deviation specification was preliminarily allocated. The model was first used to obtain a basic understanding of the factors that determine the power balance for shaped pulse. It was a powerful tool to analyze the problem of the power balance of large solid-state laser facility.