Core Viewpoint - The Chinese Advanced Attosecond Laser Facility has achieved 100% localization of its femtosecond laser systems, breaking foreign monopolies and matching or exceeding international performance standards [1][3]. Group 1: Project Overview - The project is a collaboration between the Institute of Physics and the Xi'an Institute of Optics and Precision Mechanics, aiming to create a comprehensive ultrafast electron dynamics research platform with six beamlines and thirteen research terminals in Dongguan [3]. - The femtosecond laser is crucial for the stability of the attosecond laser, with each beamline requiring a custom femtosecond laser [3]. Group 2: Challenges and Solutions - Prior to this project, China relied heavily on imported femtosecond lasers, which posed risks of embargoes and high maintenance costs [3][4]. - A dedicated team of over 60 members was formed to tackle various technical challenges over nearly three years, focusing on refining the entire laser system [3][4]. Group 3: Technological Advancements - Engineers worked closely with manufacturers to overcome initial issues with the core optical components of the picosecond laser, leading to a deep understanding of the production processes [4]. - The project has resulted in a series of technological spillover effects, benefiting both large scientific installations and the industrial laser sector in China [4]. Group 4: Future Plans and Impact - The development of the femtosecond laser has entered the engineering and mass production phase, with a peak procurement year planned for 2023 [4]. - The facility is expected to provide new research methods for significant scientific issues in various fields, potentially leading to breakthroughs in superconducting materials, magnetic storage technology, and early disease diagnosis [5].