在高功率激光二极管阵列(LDA)侧面抽运模块研究中,高效率高质量的抽运耦合结构设计非常重要。为了对抽运耦合结构进行优化设计,需要对棒状增益介质内的抽运储能分布实现量化评价。由于用于激光谐振腔和放大光路的激光二极管抽运模块的抽运储能分布要求不同,因此对激光振荡模块和放大模块中的抽运储能分布分别建立了一套评价方法。分别对激光振荡模块和放大模块中的抽运储能分布进行实例评价分析,结果表明,所提出的评价指标和计算方法既能充分反映出放大模块中抽运储能分布的储能沉积效率和抽运均匀性变化情况,也能反映出激光振荡模块中抽运储能分布与谐振腔模分布的匹配程度。 In the study of high-power laser diode array (LDA) side-pumping module, the design of high-efficiency and high-quality pumping coupling structure is very important. In order to optimize the design of the pumping coupling structure, the quantitative evaluation of the pumping energy storage distribution in the rod-shaped gain medium needs to be carried out. Because of the different pumping energy storage requirements of the laser diode pumping module for the laser resonator and the amplifying optical path, a set of evaluation methods are respectively established for the pumping energy storage distribution in the laser oscillating module and the amplifying module. The case evaluation and analysis of the pump energy storage distribution in the laser oscillation module and the amplifier module respectively show that the proposed evaluation index and calculation method can both fully reflect the energy storage and deposition efficiency of the pump energy storage distribution in the amplification module and The variation of pumping uniformity can also reflect the matching between the distribution of pumping energy stored in the laser oscillation module and the cavity mode distribution.