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Cr^4+:YAG在对撞脉冲锁模的Nd:YAG激光器中实现被动锁模的研究
引用本文:王加贤,王清月.Cr^4+:YAG在对撞脉冲锁模的Nd:YAG激光器中实现被动锁模的研究[J].光学学报,1998,18(8):83-987.
作者姓名:王加贤  王清月
作者单位:[1]华侨大学应用物理系 [2]天津大学精仪学院超快激光研究室
摘    要:在理论上提出了Cr^4+:YAG作为可饱和吸收体在Nd:YAG激光器中实现被动锁模的可能性,运用速率方程组导出在强激光脉冲作用下Cr^4+:YAG激发态吸收的恢复时间和饱和光强。实验上在带有抗共振环结构的接近于介稳腔的脉冲式Nd:YAG激光器中用Cr^4+:YAG作为可饱和吸收体实现被动锁模运转,得到能量13.5mJ、平均脉宽180ps的锁模脉冲序列。

关 键 词:被动锁模  激光器  对撞脉冲锁模  钇铝石榴石
收稿时间:1998/2/12

Passive Mode-Locking in a CPM Nd:YAG Laser Using Cr4+:YAG
Abstract:The possibility of using Cr4+: YAG as saturable absorber to achieve passively mode-locked operation in a Nd: YAG Laser is proposed theoretically. From the rate equations, we derived the resumption time and the saturable light intensity of the excited-state of Cr~4+: YAG acted by strong laser pulses. Passively mode-locked operation is experimentally realized by using Cr~4+: YAG as saturable absorber in a pulsed Nd: YAG laser with a nearly critical stable resonator and an antiresonant ring. The pulse train with energy of 13.5 mJ and pulse duration of 180 ps are obtained.
Keywords:Cr4+: YAG  excited-state absorption  saturable light intensity  passively mode-locking
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