利用氧化锌中的高次谐波产生对少周期中红外激光脉冲进行载波包络相位测量。

Carrier-envelope-phase measurement of few-cycle mid-infrared laser pulses using high harmonic generation in ZnO.

作者信息

Hollinger Richard, Hoff Dominik, Wustelt Philipp, Skruszewicz Slawomir, Zhang Yinyu, Kang Huipeng, Würzler Daniel, Jungnickel Tom, Dumergue Mathieu, Nayak Arjun, Flender Roland, Haizer Ludovit, Kurucz Máté, Kiss Balint, Kühn Sergei, Cormier Eric, Spielmann Christian, Paulus Gerhard G, Tzallas Paraskevas, Kübel Matthias

出版信息

Opt Express. 2020 Mar 2;28(5):7314-7322. doi: 10.1364/OE.383484.

DOI:10.1364/OE.383484

PMID:32225962

Abstract

High-harmonic generation (HHG) in crystals offers a simple, affordable and easily accessible route to carrier-envelope phase (CEP) measurements, which scales favorably towards longer wavelengths. We present measurements of HHG in ZnO using few-cycle pulses at 3.1µm. Thanks to the broad bandwidth of the driving laser pulses, spectral overlap between adjacent harmonic orders is achieved. The resulting spectral interference pattern provides access to the relative harmonic phase, and hence, the CEP.

摘要

晶体中的高次谐波产生（HHG）为载波包络相位（CEP）测量提供了一种简单、经济且易于实现的途径，该方法在较长波长下具有良好的扩展性。我们展示了使用3.1μm的少周期脉冲对ZnO中的HHG进行的测量。由于驱动激光脉冲具有较宽的带宽，实现了相邻谐波阶次之间的光谱重叠。由此产生的光谱干涉图样提供了获取相对谐波相位的途径，进而得到CEP。