通过控制定时抖动来提高光参量啁啾脉冲放大器的载波包络相位稳定性。
Improving carrier-envelope phase stability in optical parametric chirped-pulse amplifiers by control of timing jitter.
机构信息
Institute of Applied Physics, Abbe Center of Photonics, Jena 07745, Germany. steffen.haedrich@uni‑jena.de
出版信息
Opt Lett. 2012 Dec 1;37(23):4910-2. doi: 10.1364/OL.37.004910.
It is shown that timing jitter in optical parametric chirped-pulse amplification induces spectral drifts that transfer to carrier-envelope phase (CEP) instabilities via dispersion. Reduction of this effect requires temporal synchronization, which is realized with feedback obtained from the angularly dispersed idler. Furthermore, a novel method to measure the CEP drifts by utilizing parasitic second harmonic generation within parametric amplifiers is presented. Stabilization of the timing allows the obtainment of a CEP stability of 86 mrad over 40 min at 150 kHz repetition rate.
研究表明，光参量啁啾脉冲放大中的定时抖动会导致光谱漂移，通过色散将其转换为载波包络相位（CEP）不稳定性。减少这种影响需要时间同步，这可以通过从角度分散的闲频光获得的反馈来实现。此外，还提出了一种利用参量放大器中的寄生二次谐波产生来测量 CEP 漂移的新方法。定时稳定化允许在 150 kHz 重复率下获得 40 分钟内 86 mrad 的 CEP 稳定性。
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