Long-term stable timing fluctuation correction for a picosecond laser with attosecond-level accuracy  

作　　者：Hongyang Li Keyang Liu Ye Tian Liwei Song 

机构地区：[1]School of Physics Science and Engineering,Tongji University,Shanghai,China [2]State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai,China [3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,China [4]XIOPM Center for Attosecond Science and Technology,State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an,China

出　　处：《High Power Laser Science and Engineering》2024年第6期186-190,共5页高功率激光科学与工程(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.12325409,12388102 and U23A6002);the CAS Project for Young Scientists in Basic Research(No.YSBR-059);the Zhangjiang Laboratory Construction and Operation Project(No.20DZ2210300);the Shanghai Pilot Program for Basic Research–Chinese Academy of Sciences,Shanghai Branch

摘　　要：Rapid advancements in high-energy ultrafast lasers and free electron lasers have made it possible to obtain extreme physical conditions in the laboratory, which lays the foundation for investigating the interaction between light and matter and probing ultrafast dynamic processes. High temporal resolution is a prerequisite for realizing the value of these largescale facilities. Here, we propose a new method that has the potential to enable the various subsystems of large scientific facilities to work together well, and the measurement accuracy and synchronization precision of timing jitter are greatly improved by combining a balanced optical cross-correlator(BOC) with near-field interferometry technology. Initially,we compressed a 0.8 ps laser pulse to 95 fs, which not only improved the measurement accuracy by 3.6 times but also increased the BOC synchronization precision from 8.3 fs root-mean-square(RMS) to 1.12 fs RMS. Subsequently, we successfully compensated the phase drift between the laser pulses to 189 as RMS by using the BOC for pre-correction and near-field interferometry technology for fine compensation. This method realizes the measurement and correction of the timing jitter of ps-level lasers with as-level accuracy, and has the potential to promote ultrafast dynamics detection and pump–probe experiments.

关 键 词：laser interferometry optical cross-correlator ultrafast laser pulse synchronization 

分 类 号：TN248[电子电信—物理电子学]