百千赫兹皮秒再生放大器的输出特性

发布时间：2018-03-20 09:37

  本文选题：激光技术　切入点：全固态激光器　出处：《激光与光电子学进展》2017年06期 　论文类型：期刊论文

【摘要】：高重复频率再生放大器的能量提取周期远小于激光增益介质上能级寿命,这会导致再生放大器输出一高一低两种能量的激光脉冲,即倍周期分叉现象。针对上述问题,从理论上分析高重复频率Nd…YVO_4再生放大器的输出脉冲稳定性与重复频率之间的关系,发现提高再生放大器重复频率可以避免出现倍周期分叉现象,并通过实验验证了当重复频率大于250kHz时,Nd…YVO_4再生放大器没有出现倍周期分叉现象。此外,在吸收抽运功率为70 W时,实现了对单脉冲能量为1nJ、重复频率为94MHz的全固态Nd…YVO_4晶体半导体可饱和吸收镜锁模种子激光脉冲的再生放大,得到重复频率可调(250~500kHz)的皮秒激光,其最大输出功率达到18 W,单脉冲能量为36μJ。
[Abstract]:The energy extraction period of the high repetition frequency regenerative amplifier is much smaller than the upper energy level lifetime of the laser gain medium, which will lead to the output of a laser pulse of high and low energy of two kinds of energy, that is, the double period bifurcation phenomenon. The relationship between output pulse stability and repetition rate of high repetition rate ND... YVO_4 regenerative amplifier is analyzed theoretically. It is found that increasing the repetition rate of regenerative amplifier can avoid the phenomenon of double cycle bifurcation. The experimental results show that when the repetition rate is more than 250kHz, there is no period doubling bifurcation in the ND... YVO_4 regenerative amplifier. In addition, when the absorption pump power is 70 W, A picosecond laser with a single pulse energy of 1nJ and a repetition rate of 94MHz has been obtained by regenerating and amplifying an all-solid-state ND 鈥，

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