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几十TW乃至PW级超高功率飞秒激光脉冲，目前还只能从Nd玻璃放大器链产生，而它的前置级则需采用钛宝石飞秒再生放大器．组合Nd玻璃放大器链要求它的前置放大器必须稳定地工作在钛宝石放大介质增益曲线的边缘，1．054μm处，这就使得这种特定要求的钛宝石再生放大器与通常运转在
Dozens of TW and even PW-level ultra-high-power femtosecond laser pulses are currently only available from the Nd glass amplifier chain, while its predecessor requires a titanium-germanium femtosecond regenerator. The combined Nd glass amplifier chain requires its preamplifier to operate stably on the edge of the titanium dielectric gain curve at 1.054μm, which makes this particular requirement of the Ti: