We present a robust, three-stage optical parametric amplifier driven by a Ti:Sapphire ultrafast laser system that implements passive carrier-envelope phase stabilization and directly generates five-cycle mid-IR pulses by dispersion compensation. The source is based on potassium titanyl arsenate crystals and exploits intra-pulse difference-frequency seed generation in the mid-IR. This source will be particularly suited for applications in strong-field physics, such as high order harmonic generation and photoelectron spectroscopy.

中文翻译：

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可调谐，几周期，CEP稳定的中红外光学参量放大器，适用于强场应用

我们介绍了由Ti：Sapphire超快激光系统驱动的强大的三级光学参量放大器，该放大器实现无源载流子包络相位稳定，并通过色散补偿直接产生五周期中红外脉冲。该来源基于砷酸钛氧基钾晶体，并利用中红外中的脉冲内差频种子生成。该光源将特别适合于强场物理学中的应用，例如高次谐波产生和光电子光谱学。