2026-10-14T10:59:19Z https://www.scidb.cn/oai

10.57760/sciencedb.20293 2025-01-26T20:01:06Z

2025-01-26 Dataset for near-field modulation at the last grating of mosaic grating based compressor doi:10.57760/sciencedb.20293 en The wavefront or amplitude error originated from fabrication and assembly of large-aperture gratings in kilojoule petawatt laser systems compressor can be transformed into near-field modulation during propagation of the laser pulse. In severe cases, near-field modulation would induce laser damage on gratings and downstream optics, praticularly the last grating.Near-field transmission property of mosaic grating based compressor is investigated, the impact of periodic wavefront error and mosaic gap error of mosaic grating on near-field modulation is analyzed and evaluated. This dataset is a a record of the near-field modulation at the last grating induced by errors of the upstream gratings. Petawatt laser; Mosaic grating; Mosaic gap error; Near field Pengfei Huang PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank