环境空气中的单次载波包络相位测量
Single-shot carrier-envelope-phase measurement in ambient air
摘要：
测量和控制短周期激光脉冲的载波包络相位（CEP）对于频率计量和阿秒科学都是至关重要的。在这里，我们提出了一个相位计依赖于CEP依赖的光电流引起的圆极化的几个周期的脉冲集中在周围空气中的电极之间。新设备有助于在环境条件下进行紧凑的单次CEP测量，并承诺CEP标记的重复率比大多数传统的CEP检测方案高出几个数量级，以及在更长波长下的直接实施。
英文摘要：
The ability to measure and control the carrier envelope phase (CEP) of few-cycle laser pulses is of paramount importance for both frequency metrology and attosecond science. Here, we present a phase meter relying on the CEP-dependent photocurrents induced by circularly polarized few-cycle pulses focused between electrodes in ambient air. The new device facilitates compact single-shot, CEP measurements under ambient conditions and promises CEP tagging at repetition rates orders of magnitude higher than most conventional CEP detection schemes as well as straightforward implementation at longer wavelengths.
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