2024/02/06 by Yang Du, Du, Yang, Kui Li +15
Engineering · Physics and Astronomy · #Adaptive optics and wavefront sensing #Advanced Optical Imaging Technologies #FOS: Physical sciences #Optical Systems and Laser Technology #Optics (physics.optics)
paper · pdf · doi:10.48550/arxiv.2402.03665
openalex publication_date 2024/02/06 · openalex created_date 2024/02/08 · openalex updated_date 2026/07/28
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.