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报道了掺钛蓝宝石晶体激光放大实验研究,实验中得到最大的单程放大和双程放大增益分别为14.76和26.31,对应双程放大的增益系数为1.81cm-1,并由此推算出掺钛蓝宝石晶体的增益截面为2.74×10-19cm2,饱和能量密度为0.93J/cm2.并给出不同的泵浦能量密度所对应的最佳放大介质长度。实验表明小信号近似下,放大增益只与泵浦功率密度有关.与注入种子能量无关。实验还测量了掺钛蓝宝石晶体对不同波长种子光的放大增益。
The experiment of laser amplification of Ti: sapphire crystal is reported. The maximum one-way amplification and two-way amplification gain are 14.76 and 26.31 respectively, and the gain coefficient corresponding to two-way amplification is 1.81cm-1 The calculated gain cross section of Ti: sapphire crystal is 2.74 × 10-19cm2, and the saturated energy density is 0.93J / cm2. And give the best amplifier medium length corresponding to different pump energy density. Experiments show that small signal approximation, amplification gain only with the pump power density. Has nothing to do with injecting seed energy. The experiments also measured the amplification gain of Ti: sapphire crystals for seed light with different wavelengths.