Evolution of the spectral characteristics of frequency-modulated radiation with pulse duration of 250 ps, energy of 2 mJ, and central wavelength λ = 475 nm in XeF(C-A) amplifier of THL-100 laser system is studied by numerical simulation methods. The laws of changing the spectra and spectral energy density of laser radiation have been investigated. The maximum spectral energy density of output radiation in the positive and negative chirp modes reaches 0.92 and 0.91 J∙nm^–1, respectively, for a VUV amplifier pump radiation energy of 270 J. It has been shown that in the amplification saturation mode, the radiation wavelength with maximum spectral energy density increases from 475 to 477.8 nm for positive chirp and decreases from 475 to 472.5 nm for negative chirp.

采用数值模拟方法研究了THL-100激光系统XeF(CA)放大器中脉冲持续时间为250 ps、能量为2 mJ、中心波长λ = 475 nm的调频辐射光谱特性的演变。研究了激光辐射光谱和光谱能量密度的变化规律。对于270 J 的 VUV 放大器泵浦辐射能量，正负 chirp 模式下输出辐射的最大光谱能量密度分别达到 0.92 和 0.91 J∙nm ^–1。已经表明，在放大饱和模式下，具有最大光谱能量密度的辐射波长对于正线性调频从 475 nm 增加到 477.8 nm，对于负线性调频从 475 nm 减小到 472.5 nm。