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arXiv · 2402.03665

Multi-color Wavefront Sensor using Talbot effect for High-order Harmonic Generation

Yang Du·Kui Li·Jin Niu·Angyi Lin·Jie Li·Zhongwei Fan·Guorong Wu·Xiaoshi Zhang·Fucai Zhang
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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.

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Yang Du, Kui Li, Jin Niu, Angyi Lin, Jie Li, Zhongwei Fan, Guorong Wu, Xiaoshi Zhang, Fucai Zhang. 2024-02-06. Multi-color Wavefront Sensor using Talbot effect for High-order Harmonic Generation. https://arxiv.org/abs/2402.03665

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