All-optical spatiotemporal oscilloscope for few-cycle optical waveform  

作　　者：Qi Zeng Xinyue Yang Yimin Deng Wei Cao Peixiang Lu 

机构地区：[1]Huazhong University of Science and Technology,School of Physics and Wuhan National Laboratory for Optoelectronics,Wuhan,China [2]Optics Valley Laboratory,Wuhan,China

出　　处：《Advanced Photonics》2025年第1期6-13,共8页先进光子学(英文)

基　　金：supported by the National Key Research and Development Program of China(Grant No.2023YFA1406800);the National Natural Science Foundation of China(Grant Nos.12274158 and 12021004);the Openof Hubei Key Laboratory of Optical Information and Pattern Recognition of Wuhan Institute of Technology(Grant No.202304)。

摘　　要：The advancement of ultrafast science necessitates diagnostic techniques capable of higher precision and increased dimensionality for few-cycle pulses.As pulses continue to shorten temporally and broaden spectrally,the temporal and spatial components become inseparable.Consequently,many established techniques fall short of accurately diagnosing both the temporal and spatial characteristics of pulses.We propose an all-optical spatiotemporal oscilloscope to comprehensively characterize the waveform of few-cycle pulses.By introducing a spatiotemporal perturbing pulse to influence high-harmonic(HH)generation,the frequency of the radiating HHs oscillates with variations in the delay between the pulses.This spatially dependent frequency oscillation of the HHs enables the reconstruction of the temporal and spatial details of the perturbing pulse.This method provides a straightforward and reliable strategy for multidimensional waveform characterization of few-cycle pulses,with potential applications in probing ultrafast dynamical processes carrying spatiotemporal information.

关 键 词：spatiotemporal characteristics OSCILLOSCOPE high-harmonic generation waveform characterization 

分 类 号：O43[机械工程—光学工程]