Drift-free, 11 fs pulse delay stability in dual-arm PW-class laser systems  

作　　者：Andrei B.Nazîru ¸Stefan Popa Ana-Maria Lupu Dan Gh.Matei Alice Dumitru Dmitrii Nistor Antonia Toma Lidia Vasescu Ioan Dancus Claudiu A.Stan Daniel Ursescu 

机构地区：[1]Extreme Light Infrastructure-Nuclear Physics,National Institute for Physics and Nuclear Engineering-Horia Hulubei,Magurele 077125,Romania [2]Doctoral School of Physics,University of Bucharest,Magurele 077125,Romania [3]Engineering and Applications of Lasers and Accelerators Doctoral School,National University of Sciences and Technology Politehnica Bucharest,Bucharest 060042,Romania [4]Department of Physics,Rutgers University-Newark,Newark,New Jersey 07102,USA

出　　处：《High Power Laser Science and Engineering》2024年第5期89-96,共8页高功率激光科学与工程(英文版)

基　　金：funded through the IOSIN program,through Nucleu PN-IFIN-HH 23-26 Code PN 23 21,through ELI-NP Phase II,a project co-financed by the Romanian Government and the European Union through the European Regional Development Fund and the Competitiveness Operational Programme (1/07.07.2016,COP,ID 1334);project PCE 232/2021 PN-III-P4-ID-PCE-2020-2642 and through project ELI-RO/DFG/2023_001 ARNPhot funded by Institute of Atomic Physics Romania;funding by the European Union’s Horizon 2020 Framework Programme grant agreement number 871161 (IMPULSE);support from UEFISCDI under PN-IV-2.2-MCD-2023-0045,mobilities program。

摘　　要：Simultaneous ultra-intense pulses at petawatt laser facilities enable a broad range of experiments in nuclear photonics and strong field quantum electrodynamics. These experiments often require very precise control of the time delays between pulses. We report measurements of the time delay between the two 1 PW outputs of the Extreme Light Infrastructure-Nuclear Physics(ELI-NP) facility in Romania. The short-term standard deviation of the time delay was approximately half of the pulse duration of 23 fs, and the average delay drifted with up to 100 fs/h. The drift and sporadic delay jumps were corrected using a feedback loop, which reduced the long-term standard deviation of the delay close to its short-term value. These results imply that in ELI-NP experiments using two simultaneous pulses, a temporal overlap of better than half of the pulse duration can be achieved for more than two thirds of the shots, which would enable high data rate experiments using simultaneous petawatt pulses.

关 键 词：feedback control high-power laser laser synchronization ultrashort laser pulses 

分 类 号：TN248[电子电信—物理电子学]