组合式片状激光放大器钕玻璃片参数的优化设计

 运用随时间变化的氙灯辐射光谱模型，建立了组合式钕玻璃片状激光放大器动态增益特性的模拟程序，实现了从氙灯放电到引出激光的全过程动态模拟。研究了钕玻璃片的两个重要参数厚度和掺杂浓度对增益性能的影响。在相同的泵浦强度下，储能通量由片厚度与掺杂浓度的乘积N₀D决定，在N₀D相同时得到相同的小信号增益。当N₀D比较小时，N₀D增加1倍时储能通量增加1.25倍，相应的单片放大器增益提高5.5%，对于7片长的放大器链，总的小信号增益将提高45%；当N₀D比较大时，储能通量趋于饱和。

Parameter optimization of disk in multisegment Nd:glass disk laser amplifiers

Based upon instantaneous output spectra of xenon flashlamp, a unique dynamic modeling program has been constructed to predict the gain performance of multisegment Nd:glass laser amplifiers. The model, which includes the all dynamic modulations from flashlamp discharging to laser outputting, may be used in laser amplifier system optimizations. The influences of disk thickness and Nd 2O 3 doping level on gain performance are studied with the modeling program. Under the condition of the same pumping lever, the stored fluence and the small signal gain are determined by the doping-thickness products(Nd ion concentration by slab thickness)in the MAS slab.