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测量了Ｃｒ４＋ＹＡＧ材料的可饱和吸收特性，用多种数据分析方法处理了实验结果，Ｃｒ４＋ＹＡＧ的基态吸收截面σｇｓ＝１１×１０－１９ｃｍ２，激发态吸收截面σｅｓ＝１．２×１０－１９ｃｍ２。
The saturable absorption characteristics of Cr4 + YAG materials were measured. The experimental results were processed by a variety of data analysis methods. The ground state absorption cross section of Cr4 + YAG σgs = 11 × 10-19cm2 and the excited state cross section σes = 1.2 × 10-19cm2.