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给出了光谱、时间、空间分辨的激光二极管(LD)抽运动力学模型,包括LD阵列输出的波长啁啾效应、输出功率随时间的瞬态变化,重点研究了不同吸收带宽的激光介质对大功率LD阵列输出的光谱选择吸收特性.基于该模型,分析了三种典型激光增益介质Yb:YAG,Yb:S-FAP,Nd:YAG在脉冲储能运转方式下的抽运激发性能.优化了不同增益介质所需的LD阵列的初始中心波长,并对三种介质对LD波长啁啾效应的敏感性进行了详细研究.
The laser diode (LD) pumping dynamics model including spectral chronological and spatial resolution is proposed, including the wavelength chirp effect of the output of the LD array and the transient variation of the output power with time. The effects of the laser medium with different absorption bandwidth on the large Based on the model, the pumping excitation performance of three typical laser gain media Yb: YAG, Yb: S-FAP, Nd: YAG in the pulse energy storage mode is analyzed. The initial center wavelength of the LD array required for different gain media is studied in detail and the sensitivities of the three media to the chirp effect of the LD wavelength are studied in detail.