Space‑Laser Shockwave: Inside China’s 2‑Watt Orbital Beam That Claims to Outgun Starlink and Reshape the Security Balance in Space
In June 2025, Wu Jian of Peking University of Posts & Telecom and Liu Chao of the Chinese Academy of Sciences directed a 2-watt laser from 36,000 km in geostationary orbit to a ground station, achieving 1 Gbps. The test claimed the 1 Gbps downlink is five times faster than Starlink downlinks, per the South China Morning Post. The AO-MDR scheme combines adaptive optics and mode-diversity, routing eight spatial modes through a 1.8 m telescope and real-time selecting the three cleanest channels. Usable signal quality rose from 72% to 91% despite atmospheric turbulence thanks to AO-MDR. Starlink consumer downlinks typically
