1 kHz的相对论近单周期光学
Relativistic near-single-cycle optics at 1 kHz
摘要：
我们提出了一种激光源，提供波形控制的1.5周期脉冲，可以聚焦到相对论强度在1 kHz的重复率。这些脉冲是由高时间对比度的亚25fs脉冲的非线性压缩产生的，该脉冲来自kHz Ti：Sapphire双啁啾脉冲放大器，在拉伸的柔性中空光纤压缩器中按比例缩放以获得高峰值功率。通过首次观测相对论电子在激光尾场加速中的载波包络相位效应，证明了这种光源的独特能力。
英文摘要：
We present a laser source delivering waveform-controlled 1.5-cycle pulses that can be focused to relativistic intensity at 1 kHz repetition rate. These pulses are generated by nonlinear compression of high-temporal-contrast sub-25\,fs pulses from a kHz Ti:Sapphire double-chirped pulse amplifier in a stretched flexible hollow fiber compressor scaled for high peak power. The unique capabilities of this source are demonstrated by observing carrier-envelope phase effects in laser-wakefield acceleration of relativistic electrons for the first time.
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