The rapid progress in many areas of ultrafast science is steadily increasing the requirements on carrier-envelope phase (CEP) stabilization. While suitable sources for attosecond/high-field experiments remain limited to kHz repetition rates, two factors are of key importance to successful experiments: Tight CEP control and robustness over long timescales [1]. Utilizing a phase-locked loop, the conventional CEP locking scheme inevitably implies a trade-off between these two. On the other hand, applications for few-cycle pulses directly from the oscillator [2,3] greatly benefit from fCE = 0, which comes at an expense of performance and increased complexity.
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机译：在超快科学的许多领域中，快速的发展正在稳步提高对载波包络相位（CEP）稳定性的要求。尽管适合于阿秒/高场实验的信号源仍然限于kHz重复频率，但两个因素对于成功的实验至关重要：严格的CEP控制和长时程的鲁棒性[1]。利用锁相环，传统的CEP锁定方案不可避免地暗示了两者之间的权衡。另一方面，直接来自振荡器[2,3]的几个周期脉冲的应用极大地受益于f CE = 0，这是以性能和复杂性为代价的。
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