Chinese startup presents 15-watt EUV source prototype - Bits&Chips

The 15-watt figure is irrelevant; what matters is that it validates the laser-tin droplet plasma coupling pathway under Chinese engineering conditions. Cymer took a full decade from 3W in 2003 to 250W by 2013. A Chinese startup jumping directly into EUV source R&D, bypassing DUV entirely, signals that three upstream subsystems—high-power excimer lasers, 50kHz tin droplet generators, and vacuum plasma chambers—have crossed the proof-of-concept threshold into iterative engineering. The real barrier is not linear power scaling. The 15W-to-250W gap represents an exponential leap in thermal management and optical throughput. The harder problem sits downstream: nanometer-level surface figure accuracy on Mo/Si multilayer mirrors and whole-system synchronization across source, mask stage, and wafer stage. These are decade-scale accumulations that cannot be brute-forced with capital. For ASML and Cymer, near-term revenue is untouched, but the structural monopoly premium embedded in the 450W-to-1000W roadmap will compress. Within 18 months, expect 40-to-60W iterations and accelerated 28nm DUV immersion deployment as a bridge strategy. Full EUV source localization lands around 2030, but the public validation of the technical pathway alone is sufficient to reshape pricing power across the global lithography supply chain.