用于惯性约束核聚变激光驱动器的激光二极管抽运Nd,Y∶CaF2激光放大器的实验研究
ACTA PHYSICA SINICA(2016)
Abstract
对Nd,Y∶CaF2晶体作为激光放大器的增益介质进行了报道.研制了一台采用激光二极管面阵五向水平侧面抽运φ5 mm×70 mm Nd,Y∶CaF2的激光放大器,对其进行了实验研究.测量了Nd,Y∶CaF2晶体的吸收谱、发射谱、以及放大器的荧光分布.在相同的抽运功率下,测量了Nd,Y∶CaF2与Nd∶Glass放大器分别工作在10 Hz和1 Hz重复频率时的小信号增益,在抽运功率为9.63 kW时,Nd,Y∶CaF2放大器的小信号增益达6.12,为Nd∶Glass的1.5倍.与Nd∶Glass相比,Nd,Y∶CaF2晶体的重复工作频率不仅大大提高,而且增益性能也更强.测量了种子光和经Nd,Y∶CaF2放大器后的光谱,能量放大前后光谱几乎无变化.
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Key words
laser amplifier,sidepumped,small signal gain,Nd,Y:CaF2
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