Ultrahigh-peak-power laser pulse compression by a double-smoothing grating compressor

作者：Renjing Chen, Wenhai Liang, Yilin Xu, Shuman Du, Xiong Shen, Peng Wang, Jun Liu, Zhaoyang Li, Ruxin Li, Е. А. Хазанов · 发表于：High Power Laser Science and Engineering · 年份：2025 · DOI：10.1017/hpl.2025.28 · 被引用次数：5 · 研究领域：Laser Design and Applications、Laser-Matter Interactions and Applications、Solid State Laser Technologies

Abstract Spatial intensity modulation in amplified laser beams, particularly hot spots, critically constrains attainable pulse peak power due to the damage threshold limitations of four-grating compressors. This study demonstrates that the double-smoothing grating compressor (DSGC) configuration effectively suppresses modulation through directional beam smoothing. Our systematic investigation validated the double-smoothing effect through numerical simulations and experimental measurements, with comprehensive spatiotemporal analysis revealing excellent agreement between numerical and practical pulse characteristics. Crucially, the DSGC enables a 1.74 times energy output boost compared to conventional compressors. These findings establish the DSGC as a pivotal advancement for next-generation ultrahigh-power laser systems, providing a viable pathway toward hundreds of PW output through optimized spatial energy redistribution.