Yang Du, Kui Li, Jin Niu, Angyi Lin, Jie Li, Zhongwei Fan, Guorong Wu, Xiaoshi Zhang, Fucai Zhang,“Multi-color Wavefront Sensor using Talbot effect for High-order Harmonic Generation”,arXiv preprint arXiv:2402.03665(2024)
【原文】
Multi-color Wavefront Sensor using Talbot effect for High-order Harmonic Generation
ABSTRACT
We present a novel method for multi-color wavefront measurement of high-order harmonic generation beams using the Talbot effect, validated both theoretically and experimentally for the first time. Each harmonic maintains a unique wavefront and produces an independent set of self-images along the optical axis.We achieved the wavefronts reconstruction of three harmonics in a single measurement scan, expanding the spectrally-resolved capability of the conventional Talbot effect wavefront sensor. This breakthrough introduces a novel tool for studying the multi-color wavefront in high-order harmonic generation, unlocking the potential to investigate spatiotemporal ultrafast nonlinear dynamics in attosecond pulse formation on a shot-by-shot basis.